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There are many vital parts of the human body, some of which can kill with one blow. Some can cause their physiological functions or mechanisms to disappear temporarily or permanently. Therefore, understanding and being familiar with these key parts, coupled with accurate and powerful striking techniques, can effectively subdue the enemy in combat. In addition, you must protect these vital parts of yourself to prevent attacks from enemies.

1. Eyes

Because they can guide people’s actions, they are one of the most important parts of the human body.

Strike method: This part can be attacked with finger poke.

2. Temple

This part belongs to the temporal area of ??the head, and is passed through by the superficial temporal artery, vein and temporal nerve. Moreover, the bone in this area is fragile, and an inward blow can cause temporal bone fractures, damage the middle meningeal artery, prevent blood from flowing smoothly, and cause cerebral ischemia and hypoxia. Causes death within 3 seconds.

Strike method: When attacking, you can hit with your fist and elbow joint.

3. Ear

The auricle nerve is close to the brain. After being hit or squeezed, it can damage the arterial and venous branches leading to the meninges, blocking blood circulation. Moreover, on the upper edge of the mandible, behind the lower auricle, there is an acupuncture point that is as deadly as the temple. Call the Wangu point and hit the Wangu point on the ear and behind the ear. In mild cases, the eardrum may be penetrated or bleeding in the ear may occur. In severe cases, it may cause concussion or death within 5 seconds.

Strike method: When attacking, you can use both fists to attack left and right at the same time.

4. Chin

Since the chin is in a vulnerable position and can easily cause skull base fractures and intracranial hemorrhage after being hit, injuries can range from minor to severe. The pain is unbearable and can lead to coma or shock.

Strike method: When attacking, you can use a straight punch or an elbow lift.

5. Adam's apple

Because there are trachea, carotid artery and vagus nerve in Adam's apple. Therefore, chopping with the outer edge of the palm or strangling from behind with the forearm can kill the enemy. Of course, you can also use your fingers to jam the Adam's apple, causing the person to suffocate or even die due to lack of oxygen in a short period of time.

Strike method: When attacking, you can attack directly or use elbows or hand jams.

6. Face

The face is where important organs such as vision, smell and oral cavity are located. Due to the rich distribution of nerves and blood vessels here, the pain sensation is extremely sensitive. The pain is excruciating when struck, and may even result in loss of combat effectiveness.

Strike methods: When attacking, you can use fist strikes, knee strikes and foot kicks. In this way, the enemy can faint or go into shock within 3 seconds.

7. Outside and back sides of the neck

Both sides of the neck are covered with fatal blood vessels and nerves. The carotid artery and vagus nerve are also distributed along both sides of the neck. If you slash the outside or back of the enemy's neck with the outer edge of your palm, it can compress the carotid sinus, causing severe arrhythmia and leading to heart failure. And killed within 2 seconds.

Strike method: When attacking, you can use the outer edge of your palm to chop, or you can use your elbow joint to hit it.

8. The pit of the heart

This is the "vital" place, where the diaphragmatic nerve plexus, gastroesophagus, aorta, and inferior vena cava are distributed. If subjected to a violent blow, the blood vessels will expand due to external pressure. Causes the heart to beat rapidly or stop beating, suffocation, and death within 3 seconds.

Strike method: To hit this part, it is best to kick or kick with your feet, because attacking with your feet has strong penetrating power.

9. Abdomen

The abdomen includes the area below the xiphoid process of the human chest, the navel and its surrounding areas. The right upper quadrant houses the liver and gallbladder, and the left upper quadrant houses the stomach and spleen. On both sides are the kidneys, and in the lower abdomen are organs such as intestines and bladder. These organs are arranged in the wall of the abdominal cavity and press vertically on the pelvis, close to the heart, as well as the mesentery and neural nodes. Therefore, after receiving a violent blow from an external force, the visceral blood vessels will expand due to external pressure, causing blood circulation to be blocked. At the same time, because the peritoneal nerve endings in the abdominal wall layer are rich and sensitive, people will experience unbearable pain. If the liver, spleen, or kidneys rupture and bleed, the enemy will die within 5 seconds.

Strike method: When attacking, you can use kicks, knee strikes, etc. to inflict fatal attacks on the enemy.

10. Ribs

There are 12 pairs of ribs in the ribs. The bones are thin and long, and the muscles attached to the surface are also very thin, so you can hit them with your knees or kick them. Any part of the ribs can cause the enemy's ribs to be broken or killed. Moreover, after being hit, the internal organs will be shaken. After a fracture, the sharp part of the broken wound will pierce the internal organs, causing massive bleeding in the body.

Strike method: When attacking, you can use boxing, knee bumping or kicking. If the attack is powerful, the enemy can be killed within 3 seconds.

11. Crotch

The crotch is the key point of a man. Even if this part is attacked by women and children, it can make any strong man surrender. If violently attacked, the person will go into shock or die within 3 seconds.

Strike method: You can kick this part with your feet. If the distance is very close, you can use your knees to hit instead.

l 2. Knee joint

It is the largest and most complex main joint of the lower limbs in the human body. It consists of the lower end of the femur, the patella and the upper end of the tibia.

Because this area is exposed and has less subcutaneous fat, a heavy blow can tear the ligament or shatter the patella, making it unstable or unable to move.

Strike method: To attack this part, you can kick it with the outside of your foot, or you can use the top of your foot (instep) to sweep it.

13. Instep

The instep is densely covered with nerves and has very few muscles. It consists of the cuboid bone, 3 cuneiform bones, and the articular surface of the base of 5 metatarsal bones. The metatarsophalangeal joint consists of the distal end of the metatarsal bone and the proximal end of the first phalanx. Therefore, it will be out of joint and dislocated when pressed by external forces. Moreover, the range of motion of the ankle joint connecting it is also small, such as being hit hard or twisted. Can cause ligament tears.

Strike method: When attacking, you can stamp down with your heel or crush the instep.

14. Numbness

The main types of tendons in the human body include: elbow tendons, bowl tendons, tiger mouth tendons, and back of hand tendons. However, these parts are relatively hidden and difficult to control accurately.

2. Detailed explanation of the key points of the human body - eyes

The eyes are human visual organs and have certain particularities in organizational structure and physiological functions. The outer wall of the eyeball is composed of three layers of membrane. The inside of the eyeball is composed of aqueous humor, lens and vitreous body, which are all colorless and transparent jelly-like liquids and are the refractive devices of the eye. The bottom of the eyeball is near the bridge of the nose on both sides, where the optic nerve is connected to the brain.

The eyes have a visual function. Violent blows to the eyes can easily cause blindness. Because visual function plays an important role in people's daily life, the eyes are often listed as one of the key parts of the human body. Not only do the folk boxing records handed down from ancient times contain records of "fighting overtly and covertly", but in the contemporary U.S. Army combat forces, eye strikes are also included in the instructions for individual combat training.

There are many ways to blind the eyes, including direct blunt force blows, poking with sharp objects, and injecting high-speed splashes.

1. Why is hematoma prone to occur under the eyelid skin?

Strike the eye with blunt violence such as fists and palms can cause rapid bleeding and edema under the eyelid skin. This is because the skin of the upper and lower eyelids is thin, and the subcutaneous tissue is loose and easy to accumulate blood. Therefore, congestion and edema are more likely to occur than in other parts of the eye in case of violent blows. Simple extraocular contusion can cause massive intraorbital hemorrhage, resulting in exophthalmos and severe impairment of visual function.

2. The eyeball is a fragile organ of the human body.

If the eyeball is hit with blunt force or a blunt object is scratched from the surface of the eyeball, the outer cornea of ??the eyeball can rupture or fall off. There are abundant peripheral nerves in the cornea of ??the eye, making the cornea extremely sensitive to external foreign body stimulation. Even a slight stimulation will cause a strong physiological reaction. After the cornea is damaged, it will cause severe eye pain, sensitivity to light, inability to open the eyelids, and severe visual impairment.

After the eye is hit by a blunt instrument, in addition to severe pain, the eyeball may also be compressed by external force or swelling, which can reflexively cause a decrease in heartbeat, leading to weakness in the limbs and reduced reaction and adaptability. . Often creates a passive situation in combat.

In addition, the texture of the eyeball is fragile, and slight violence is enough to rupture the eyeball.

Hitting the eye with a fist blade or poking the eye socket directly with fingertips or other sharp objects can cause the eyeball to rupture, cause massive bleeding in the eye, prolapse of eye contents, and complete loss of vision.

Although vision loss is not life-threatening, it can directly affect a person's ability to move. Therefore, in hostile acts of violence, the eyes are often the focus of attack.

3. Detailed explanation of the key points of the human body - temples

The temples are in front of the auricles, on both sides of the forehead, and above the extension line of the outer corners of the eyes.

The temple is known as the "extra-meridian odd point" in the meridian theory of traditional Chinese medicine, and it was also one of the first "dead points" listed as a vital part in various martial arts schools. It is recorded in Shaolin boxing that once the temple is hit, "it can range from fainting to severe death." Modern medicine has proven that hitting the temples can cause death or concussion and loss of consciousness.

1. The temple is the weakest part of the skull plate

The temple is located at the intersection of the parietal bone, zygomatic bone, sphenoid bone and temporal bone, which is called the "pterion" or "wing slit". This is where the skull plate is thinnest and the bone is fragile. The skull is a hard bone plate that protects the brain. The thickness of the skull plates varies from place to place, with an average thickness of 5 millimeters and a maximum thickness of 1 centimeter. The thickness of the bone plate at the temple is only 1-2 mm, which is the weakest part of the skull. It can easily cause fractures if it is hit or squeezed. A fracture can directly affect brain function.

2. There are many sources of intracranial bleeding deep in the temple.

In this part of the brain, blood vessels are abundantly distributed, thus forming numerous sources of intracranial bleeding. The middle meningeal artery originates from the internal maxillary artery, runs upward along the squamous part of the temporal bone outside the dura mater, and branches into the anterior and posterior branches of the middle meningeal artery at the squamous part of the temporal bone at the temple. At the same time, the middle meningeal vein also travels with the middle meningeal artery. Under the dura mater, a deeper layer inside the skull, there are also cortical arteries and veins of the temporal lobe of the brain.

A violent blow to the temple can not only damage the middle meningeal artery due to temporal squamous fracture of the skull, but can also often damage the middle meningeal artery and vein when the skull is intact, forming a dura mater at the base of the middle cranial fossa. External hematoma. Middle meningeal artery rupture forms hematoma, which is not only very rapid, but also has extremely serious consequences.

Rupture of the middle meningeal artery can cause a person to fall into coma immediately. The intermittent period of wakefulness after coma is very short, ranging from less than 1 hour to 10 minutes. Complete coma often occurs two hours after the injury. If the bleeding cannot be effectively stopped 6 hours after the injury, it can be fatal.

Injury to the two anterior and posterior branches of the middle meningeal artery and the artery in the cortical sulcus of the temporal lobe of the brain will form a huge intracranial hematoma centered on the temporal region in a deeper layer of the meninges. Because the bleeding site is deeper, it is more dangerous.

3. The temporal bone artery groove and bone canal at the temple form an obvious weak zone

Because the middle meningeal artery runs closely under the skull, a very weak zone is formed in the squamous part of the temporal bone. Special anatomical features. The middle meningeal artery in the deep tissue of the temple forms a deep bone groove - the temporal bone artery groove - on the bone plate on the inner surface of the squamous part of the temporal bone. This bone groove forms an obvious weak zone on the already thin bone plate. A blow to the temple is often the first to cause fractures in this bone groove, and fractures at the temporal bone artery groove are often likely to involve damage to the middle meningeal artery in the bone groove, causing intracranial hematoma.

The anterior branch of the middle meningeal artery completely passes through the bone plate, forming a bony tube about 2 cm long on the inner surface of the temporal bone. Due to the existence of the bony canal, a section of the anterior branch of the middle meningeal artery is completely fixed. When the temple is struck by an external force, the anterior branch of the middle meningeal artery is easily torn at the bony canal. At the same time, temporal bone fractures are also easily formed at the bone canal. When the fracture line crosses the bone canal, the damage to the blood vessels and the resulting intracranial hematoma are often more serious.

Therefore, the temples on both sides of the head actually constitute a fatal danger area, that is, the skull fracture-prone area centered on the temporal squamous part of the skull and the intracranial area centered on the temporal lobe of the brain. Hematoma-prone areas.

4. Why hitting the temple can easily destroy a person's balance function?

The deep brain tissue of the temple is the temporal lobe of the brain. The temporal lobe is the auditory center of the cerebral cortex. The auditory center controls the human auditory nerve and can sense hearing and changes in external sounds through the middle ear. At the same time, you can also feel the changes in body position in space through the "vestibular device" of the inner ear, and thereby adjust the tension of the muscles throughout the body and maintain body balance. Therefore, this area of ??the cerebral cortex not only senses hearing, but also controls people's sense of balance.

In addition, the subcutaneous part of the temple is where the "trigeminal nerve" and "ciliary ganglion" converge. The trigeminal nerve conducts sensation to the head and face and is the most sensitive cranial nerve to pain. The ciliary ganglion is an important ganglion that regulates visual activity.

Once the temple is violently struck, it will first vibrate the auditory center of the temporal lobe of the brain, causing the auditory nerve to be strongly stimulated. Causes temporary loss of balance feeling and disorder of whole body muscle tension regulation. At the same time, it will also stimulate the nerves under the skin of the temples, making people dizzy, dizzy, blackened, and unable to maintain balance. Therefore, although a blow to the temple with ordinary violence will not cause brain damage, it can easily knock someone down. In the folk martial arts of Wu Tu, there has been a record in the past that "hit the sun with one method and fall to the ground with a fist".

4. Detailed explanation of the key points of the human body - ears

The ear is an organ of hearing and also an organ of positional sense. In addition to sensing hearing, it also has the function of sensing changes in body position in space and maintaining body balance. The root of the ear is the root of the posterior earlobe, in the depression behind the earlobe, above the angle of the mandible, and below the mastoid process of the temporal bone. It is also known as the "Pu Yin point" or "the point behind the ear" among the people.

The ear is divided into the inner ear, the middle ear and the outer ear. The outer ear encapsulates three parts: the pinna, external auditory canal, and tympanic membrane. When sound waves enter the ear canal, they first pass through the eardrum. The middle ear is located between the inner and outer ears and plays a role in conducting sound waves. The inner ear is composed of a bony labyrinth and a membranous labyrinth, and is divided into a part that senses hearing and a part that senses changes in spatial position. The part that senses changes in spatial posture is also called the "vestibular analyzer of the inner ear" and includes an utricle, a saccule, and three membranous semicircular canals with different orientations. There are a large number of ciliated cells on the walls of the utricle and saccule and on the ampullar ridges of the three semicircular canals, and their hair bundles are inserted into a solid particle called "otolith". Under normal circumstances, otoliths give uniform pressure to the ciliated brain, giving people a accustomed sense of balance. In addition, the three semicircular canals are filled with lymph fluid. When a person's normal body position changes, the lymph fluid in the semicircular canals will inevitably flow, causing the otoliths to tilt and the cilia to bend, creating a new stimulation to the surrounding peripheral nerves. After the peripheral nerves are stimulated, they transmit the excitement to the position perception center of the brain, allowing people to feel the changes in spatial posture. At the same time, the tension of the muscles in the whole body is re-adjusted to adapt to the changes in body posture and maintain body balance. People with "allergic" vestibular organs will have an excessive reaction when making major changes in body position, and may experience symptoms such as dizziness, nausea, even vomiting, and sweating, which is called "motion sickness."

A blow to the ear can pierce the eardrum and impair the balance function at a mild level, or cause coma or cause cerebrospinal fluid otorrhea, which can kill a person.

1. Eardrum rupture and inner ear labyrinth shock

Hitting the ear with the fist or palm can cause the middle ear tympanic membrane to rupture due to external shock and air wave impact, causing bleeding in the ear, Pain, tinnitus, and hearing loss. Sometimes it is accompanied by symptoms such as dizziness, nausea, and shock.

When the blow is severe, the air forms strong pressure in the narrow ear canal, which can cause the inner ear labyrinth to oscillate, leading to inner ear labyrinth bleeding, dizziness, nausea or brief coma, and affecting the balance function of the vestibular organ. Be damaged, feel deviation, stand unstable, fall for no reason. Coma caused by concussion of the inner ear labyrinth is different from concussion. Not only is consciousness easily restored, but the function of the vestibular organ is also easily compensated. Therefore, the coma after inner ear labyrinth shock is only temporary and transient.

2. Why does a heavy blow to the ear cause cerebrospinal fluid leakage?

Gravity blow to the outer ear can not only damage the eardrum and cause the inner ear labyrinth to oscillate, but also often cause cerebrospinal fluid leakage and cerebrospinal fluid leakage. Leakage is a direct consequence of a temporal bone fracture. After the temporal bone is fractured, the leaked cerebrospinal fluid will enter the ear canal through the fracture crack and flow out of the ear canal. Temporal bone fracture is also a part of craniocerebral trauma. Therefore, when cerebrospinal fluid leaks, symptoms of concussion and brain injury such as coma and facial paralysis often occur. In severe cases, it can even kill people.

3. Pinch the base of the ear can cause people to faint.

Under the skin of the base of the ear, there are multiple nerve branches such as the greater auricular nerve and the lesser occipital nerve that overlap. Therefore, the root of the ear is an extremely sensitive part. Pinch the root of the ear will cause severe pain, and pinching it hard can make people faint.

4. A heavy blow to the base of the ear can cause immediate death.

The base of the ear is under the mastoid process of the temporal bone and close to the bottom of the skull cavity and the connection between the base of the skull and the spine. In the cranial cavity deep beneath the ears is the connection between the brainstem and spinal cord. called the medulla oblongata. There is a lack of subcutaneous tissue under the skin of the ear base, and the intramuscular and skin are extremely thin. The root of the ear is exactly the weak part on the side of the head close to the base of the skull and medulla oblongata. Therefore, there is a description in the folk traditional acupuncture theory that "the ear tendons lead to the brain, but are very close to each other".

The medulla oblongata is the human life center. The functional activities of the medulla oblongata control all basic life activities such as heartbeat, blood pressure, and breathing.

Blowing the base of the ear can easily shock the base of the skull. Skull base concussion will inevitably spread to the medulla oblongata, causing the brainstem to be stretched, stretched or displaced laterally, causing a sudden weakening or slowing of the heartbeat, a drop in blood pressure, shortness of breath, difficulty in breathing, and death. Severe coma or cardiac or respiratory arrest may even occur, leading to immediate death. Severe skull base concussion sometimes results in skull base fractures. Skull base fractures usually result in coma and leakage of cerebrospinal fluid from the ear canal.

5. Detailed explanation of the key points of the human body - chin

The chin is also called the submandibular triangle. The chin is a triangle formed by the lower edge of the mandible at the base of the mandible, the front edge of the mandibular ramus, and the upper cervical root. The chin is connected to the neck downward and connected to the bottom of the cranial cavity upward through the head of the mandible. The mandibular head on both sides of the lower jaw and the mandibular fossa of the temporal bone at the base of the skull form the mandibular joint. Due to the existence of the mandibular joint, the submandibular angle and the base of the cranial cavity form a close connection in the bony structure.

In the middle of the submandibular triangle, there is an important meridian point, the Lianquan point on the Ren channel. Folks have regarded it as a key acupoint since ancient times, and there is a description of "hitting Lianquan point will cause your breath to disappear and your life will be at an end". Since hitting the Lianquan point often causes people to fall due to the swing and shock of the head, some people also call it the "falling point".

A blow to the chin can directly cause damage to the base of the skull. The entire chin is located at the bottom of the mandible, and can usually be injured only by blows from bottom to top with fists or heel of palms. A simple chin injury is not very important. What really poses a serious threat to life is skull base injury caused by hitting the chin.

When the chin is hit by punches or palms, the violence can pass through the force-bearing surface and be transmitted upward along the mandible to the base of the skull, causing the head of the mandibular joint to violently hit the middle cranial fossa, causing a skull base fracture.

Skull base fractures caused by blows to the chin are more serious than skull base fractures caused by other causes. Because the bottom of the skull cavity has a special structure, there are many bony tuberosities and bone ridges on the bone surface, and the resistance varies from place to place. Therefore, after the chin is hit and the middle cranial fossa is hit, a long length can often be formed at the base of the skull. fracture line. The fracture line bypasses the hard bony tuberosity and bony crest, extending from the middle cranial fossa to the weak area at the base of the skull.

Blows to the chin can cause skull base fractures. Mouth and nose bleeding without direct injury often occur, as well as cerebrospinal fluid otorrhea or cerebral fluid rhinorrhea. Cerebrospinal fluid leakage is often mixed with blood, so foreign bodies in the ears and nose usually appear milky yellow or pink. Severe skull base fractures are often combined with severe brain contusions, resulting in dizziness, headache, nausea, vomiting and varying degrees of coma. Because skull base fractures are difficult to detect, most people with severe skull base fractures die quickly.

6. Detailed explanation of the key points of the human body - throat

The key points of the throat are mainly the throat and Adam's apple.

In the front of the neck, there is a depression on the inside of the two clavicle and the upper edge of the sternal manubrium. Within the depression are the descending innominate vein, trachea, esophagus, and branches of the phrenic nerve and vagus nerve. The trachea is located in the outermost layer of the skin. This depressed area is commonly known as the throat, and in traditional Chinese medicine meridian science, it is also called the "Tiantu point". The "natural disaster point" has been regarded as a critical part since ancient times. In Shaolin boxing, there is also a martial arts formula of "poke the natural disaster point twice, lock the throat and cause coma".

Punking the Tiantu point with your fingers can violently compress the trachea, stimulate the vagus nerve and phrenic nerve, cause reflex dyspnea and severe coughing, and even cause suffocation.

The vagus nerve in the lungs is directly distributed in the trachea and the bronchial tree in the lungs, controlling the breathing of the lungs, while the phrenic nerve is directly distributed in the center of the diaphragm, the main respiratory muscle of the human body, and controls the movement of the diaphragm. Strong stimulation of the phrenic nerve will inevitably cause diaphragm spasm, causing severe coughing and difficulty breathing. Strong stimulation of the vagus nerve will reflexively inhibit the respiratory function of the lungs through the vagus nerve center in the medulla oblongata. As a result, it can easily lead to suffocation.

Pinching the Tiantu point with your fingers continuously can compress the trachea, innominate vein, vagus nerve and phrenic nerve at the same time, and can cause respiratory obstruction, venous return obstruction, cerebral hypoxia and nerve reflexes. Cause suffocation or coma.

Striking or pinching the Tiantu point will generally not cause fatal consequences, but if the throat is punctured, it will cause severe hemothorax and mediastinal emphysema, causing a large amount of blood to flow into the chest, and Cause subcutaneous emphysema in the mediastinum and neck. Hemothorax and emphysema mediastinum can compress the lungs and heart, both of which can lead to death in a short period of time.

The Adam's apple is in the middle of the neck, protruding under the skin, especially in adult men. The Adam's apple connects to the pharynx, mouth, and nasal cavity, and connects to the trachea below. It is the main ventilation channel for gas exchange between the lungs and the outside world. The larynx is supported by cartilage, of which the thyroid cartilage is the largest piece. The protruding part of the thyroid cartilage in the neck is the Adam's apple.

The Adam’s apple is usually regarded as a vital part. Blows to the Adam's apple, strangulation, strangulation, and neck cutting with sharp instruments are often used as fatal methods. According to forensic statistics, many people who commit suicide or murder are accustomed to cutting their necks above and below the Adam's apple. Regardless of suicide or homicide, neck cutters often mistakenly believe that cutting off the trachea or larynx can easily lead to death. But in fact, cutting off the trachea only shortens the respiratory tract and does not constitute the real cause of death. However, hitting the Adam's apple with bare hands, fists, and palms, or strangling, choking, or squeezing the Adam's apple can cause death.

1. Continuous compression of the Adam's apple can block breathing and circulation

ChroAT-locking, strangulation, strangulation, and continuous compression of the Adam's apple with the palms and fingers generally cannot cause immediate death. It takes a while and the death rate is relatively slow. Death caused by compression of the Adam's apple is mainly caused by blocking breathing and blocking blood flow in the cerebral circulation.

Using palmar fingers to compress the Adam's apple generally cannot completely block the respiratory tract. Complete obstruction of the airway is extremely unlikely and will only occur if a thin rope is compressed between the thyroid cartilage and hyoid bone. Since the obstruction of breathing during a chokehold is incomplete, the suffocation caused is also incomplete. In this case, the fatal process needs to last for a period of time.

When the Adam's apple is compressed with the palms and fingers, the blood circulation in the head and neck cannot be completely blocked. The carotid artery that supplies blood to the head is not easy to be completely blocked because it is covered by the sternocleidomastoid muscle. The deep vertebral artery is protected by the cervical vertebrae and cannot be compressed at all, and can still remain open. Therefore, the obstruction of the arterial blood supply when the neck is compressed is also incomplete. Only obstruction of jugular venous return is usually serious. However, obstruction of jugular venous return cannot occur immediately after Adam's apple is compressed. Therefore, head congestion, increased intracranial pressure and cerebral hypoxia caused by insufficient arterial blood supply and blocked venous return also need to last for a certain period of time to truly form.

Whether the respiratory tract is compressed to block pulmonary ventilation, or the arterial and venous blood vessels are compressed to block cerebral circulation blood flow, the concentration of carbon dioxide in the cerebral blood flow will continue to increase and the partial pressure of oxygen will gradually decrease, causing cerebral infarction. Death due to lack of oxygen. After the formation of cerebral hypoxia, the brain tissue still has a certain tolerance time. Generally, 1-3 minutes of cerebral hypoxia can cause a person to fall into coma, and 5-6 minutes can cause complete death. After cerebral hypoxia occurs, it will also stimulate the "chemical receptors" in the carotid arteries, causing people to have a strong desire to take deep breaths, which will then lead to the fear of suffocation and dying resistance and struggle. In the case of high resistance, death is usually slow, usually taking a few minutes.

2. A blow to the Adam's apple can cause death immediately.

Blowing the Adam's apple with fists or palms can cause death immediately. This is mainly due to the strong stimulation of the superior laryngeal nerve on the Adam's apple and the vagus nerve plexus on the esophagus, resulting in reflex inhibition of heartbeat and breathing.

The superior laryngeal nerve is a branch of the vagus nerve and an important sensory nerve ending under the skin of the neck. The esophageal vagal plexus is located on the esophagus close to the posterior wall of the trachea and is formed by the interlacing of the left and right vagus nerves. The vagus nerve is connected to the vagus nerve center in the medulla oblongata and has a strong inhibitory effect on heartbeat and breathing. A strong blow to the Adam's apple will stimulate the superior laryngeal nerve and esophageal vagal plexus to produce strong excitement, which will be transmitted to the medulla oblongata, causing reflex apnea, sudden suffocation, sharp decrease in heart rate, drop in blood pressure, and even respiratory and cardiac arrest, leading to immediate coma or death.

7. Detailed explanation of the key points of the human body - face

The key points of the face are mainly the nose and triangle area.

The external nose is located in the center of the face and is a bony structure composed of bone and cartilage. The facial triangle refers to the triangular area on the face below the root of the nose, above the tip of the nose, from both sides of the nose to the corners of the mouth. Hitting the nose and facial triangle area can not only directly damage the nasal bones, but is often potentially life-threatening.

1. Direct consequences of nasal bone injury

The external nose and nasal cavity are composed of bones and cartilage as scaffolds, directly covering the skin. Due to the presence of nasal cartilage, the bony structure of the nose becomes fragile.

At the same time, the nasal surface and nasal cavity lack subcutaneous tissue, and there is neither rich muscle nor fat. Within the external nostril, the skin is directly connected to the perichondrium. In the deep nasal cavity, the nasal mucosa directly covers the nasal bones and nasal cartilage. Therefore, when a nasal injury occurs, the pain is severe. In addition, there are two very small tear bones on both sides of the nasal bone. The tear bone is thin and brittle, which can cause pain in the nose and incessant tears due to pressure on the tear bone. Blunt violent blows to the nose, such as punches or blunt force blows to the bridge of the nose, can break the nasal bones and cause the bridge of the nose to collapse. When violence is applied above the bridge of the nose, the front of the bridge of the nose collapses, resulting in a saddle-shaped deformity. When violence is applied to one side of the nose bridge, the nose bridge on the same side as the impact surface will collapse, the opposite side will bulge, and the nose bridge will become skewed. Sometimes a violent blow to one side of the bridge of the nose can not only crush the nasal bones, but also cause fractures of the lower orbit. Broken nasal bones can cause massive bleeding in the nose, abnormal pain, tears, and temporary visual impairment.

2. Potential risk of nasal injury

There are many air-containing bony sinuses around the nasal cavity, called sinuses. The sinuses include the maxillary, ethmoid, frontal, and sphenoid sinuses. These sinuses lead to the nasal cavity and are connected to the cranial cavity. Nasal bone injuries often involve the sinuses. Sinus injuries are generally more serious than nasal bone injuries. Injuries to the frontal sinus, ethmoid sinus, and sphenoid sinus often result in skull base fractures, causing cerebrospinal fluid to leak out of the nasal cavity. Laceration of the cervical wall of the maxillary sinus can cause enophthalmos and diplopia. Injury to the ethmoid sinus can cause visual impairment or even blindness due to compression of the optic nerve.

Leakage of cerebrospinal fluid from the nasal cavity is strong evidence of sinus injury and skull base fracture. After nasal bone injury, cerebrospinal fluid leakage is often mixed with large amounts of epistaxis and flows out of the nasal cavity, making it difficult to identify clearly. To determine whether there is cerebrospinal fluid leakage, you can drop the shallow-colored liquid flowing out of the nasal cavity onto gauze or absorbent paper. If a circular red halo moistened by water quickly appears around the blood stain, cerebrospinal fluid leakage can be confirmed.

The real danger of cerebrospinal fluid leakage is retrograde intracranial infection, leading to meningeal inflammation, and sinus lacerations that connect the skull base fracture to the nasal cavity. External bacteria can retrogradely invade the brain at any time. If you are not careful, it can cause May cause life-threatening consequences. Therefore, if cerebrospinal fluid rhinorrhea occurs, it should be allowed to flow naturally. Do not flush or fill the nasal cavity to stop bleeding or prevent cerebrospinal fluid leakage, so as to avoid life-threatening.

3. Potential dangers of nasal bleeding

After a violent blow to the bridge of the nose, massive nasal bleeding is very common. The nose has rich blood supply and is distributed by four arteries: the dorsal nasal artery, the internal frontal artery, the medial canthal artery and the anterior ethmoid artery. Moreover, the blood vessels in the nasal mucosa are extremely easy to rupture. Therefore, nose bleeding is easy to occur regardless of the severity of the nasal injury.

The danger of nasal bleeding does not lie in the blood loss itself. The real danger is bleeding in the nose, flowing through the throat and causing aspiration. In the back of the nasal cavity, since the nasopharynx is connected, bleeding in the back of the nasal cavity or sinuses can easily enter the respiratory tract, blocking breathing, causing choking or suffocation, which is life-threatening. Some people are used to tilting their heads back after nasal bleeding in an attempt to stop the bleeding. In fact, this approach makes it easier for blood to flow into the respiratory tract, which is very dangerous. The correct approach should be to bend your head forward and breathe through your mouth instead of your nose to avoid aspiration.

4. Potential danger of damage to the facial triangle area

The facial triangle area is also called the facial danger zone. Violent attacks on the facial triangle are generally not harmful as long as the epidermal tissue is not damaged, but damage to the epidermis of the facial triangle can cause fatal consequences.

In the facial triangle area, nerves and blood vessels are extremely abundant, especially veins. Facial veins have a special structure and do not have venous valves, so it is easy for blood to flow backwards. The return flow of facial venous blood mostly enters the intracranial cavernous sinus through the deep facial vein and medial canthal vein. Therefore, if the facial triangle is damaged, external bacteria can easily spread to the entire head and face through the facial veins, and invade the skull along the facial veins, causing intracranial infection, inducing meningeal inflammation, and leading to life-threatening consequences. For this reason, no matter how much bleeding occurs due to trauma to the facial triangle area, you should not directly squeeze it with your hands or cover it with unclean objects to prevent bacterial infection and invasion of the brain.

8. Detailed explanation of the vital points of the human body - neck

The vital points of the neck are mainly the back and sides of the neck. Since the occipital part of the back of the head is close to the back of the neck, it is classified as the neck vital point.

1. The occiput refers to the area above and below the occipital tuberosity of the back of the head. The occipital part of the brain corresponds to the posterior cranial fossa, and there is no obvious boundary with the neck downward. Violent blows to the occiput of the brain often have fatal consequences. A long time ago, the occipital point in the middle of the head has been classified as a "fatal point" by the folks.

1. A blow to the occipital part of the brain can easily cause a concussion.

The brain tissue is directly protected by the skull. The cerebrospinal nucleus under the skull, between the three layers of meningeal membranes and in the ventricles also plays a protective role in brain tissue. When the head is violently struck, the cerebrospinal fluid in the struck area immediately shunts to other parts to cushion the concussion of the external force on the brain. However, the buffering of various parts of the head against external violence is uneven. The human forehead can withstand strong external forces and has good buffering properties against external shocks. Compared with the forehead, the occipital part of the brain is the part with the worst tolerance to external force impacts. For example, people can hit a high-speed flying football with their forehead, and their forehead can withstand heavy punches without being knocked unconscious. People can easily be knocked down by hitting the back of the head with a high-speed flying football or hitting the back of the head with a heavy punch.

In actual head injuries, if the forehead is violently struck, intracranial hematoma is rarely formed, while if the occipital part of the brain is violently struck, the rate of intracranial hematoma is very high. It can be seen that the buffering ability of the occipital part of the brain against external force impacts is far less than that of the forehead.