I'll give you it Adventures in Watermelon Seeds Watermelon is big, round, sweet and delicious, and everyone loves it! But while watermelon flesh can be eaten, watermelon seeds cannot. And it so happens that one day, a student was eating watermelon, but accidentally swallowed a watermelon seed into the stomach. What kind of "adventure" did the watermelon seed go through in this student's stomach? Don't worry, listen to me slowly tell you. That is to say that this watermelon seeds "fish in troubled waters" into the mouth of the students, there are two rows of upper and lower white and bright guillotine ---- teeth to them to face, watermelon seeds were afraid of their own chopped into "meat sauce", hurry to jump and jump, not yet stood still, there will be A mixer --- tongue will stir them to the sky and the earth, is the Monkey King down to the world can not stand this kind of mixing. At the same time, the salivary glands sent a lot of liquid soldiers and generals, the rapid formation of the encirclement, which can be scared of the starchy ingredients, one by one, they began to "hold their heads and scurry" up. In this even with the fear of tossing, watermelon seeds finally saw the exit, then sprinted to arrive. Too late to think about it is ready to jump into the trachea by many cartilage support, this time the anaerobic cartilage in time to cover the mouth of the trachea, otherwise it can be bitter that student, watermelon seeds with the trend of food was pushed into another pipeline --- esophagus. Watermelon seeds feel like riding on a parachute in this black corridor in the slipping and falling, and soon landed in a big bag-like structure --- the stomach. Oh no, there's an earthquake here. The stomach was writhing and churning food and secreting large amounts of acidic gastric juices. In this bumpy tremor, watermelon seeds in order to avoid being disfigured by hydrochloric acid, rushed to hide, and when it looked up again, the gastric juice killed a strong army --- pepsin, see them, the protein have to put up their hands to apologize, suddenly disappeared. Suddenly a bump, watermelon seeds feel a slip underfoot, it and other small partners were pushed into a thorny small intestine. Inside is covered with countless uneven ring-shaped folds and small intestinal villi, villi are densely covered with capillaries of different colors and shades. Watermelon Zi curiously admired and amazed, after walking for a while, suddenly realized that the number of various companions who came with him was decreasing, and many strange new faces appeared. What's going on here? It turns out that the small intestine has more powerful three teams --- bile, intestinal fluid, pancreatic fluid. The body of the huge fat particles met the bitter bile, immediately broken into pieces, into small droplets, not yet allowed these small droplets of organization counterattack, they and proteins, starches and other sugary substances by the pancreatic fluid, intestinal fluids away from the "processing and transformation" to go. Eventually, the fat droplets were broken down into glycerol and fatty acids; proteins were broken down into amino acids; starch was broken down into glucose. Glycerol, fatty acids, amino acids, glucose, these new partners were immediately transported away by the blood in the capillaries. Almost all of the partners with the "sacrifice", watermelon seeds feel very frustrated, it is downcast and continue to move forward, and then feel the small intestine is really a long way ah! It really wanted to see the outside world. The watermelon child violently felt the road is much wider and smoother than the original, it turns out that it and the rest of the food debris was pushed into the large intestine. It saw a small exit, thought finally able to go out, immediately move to the exit, not yet close to it, was behind the food residues pushed forward, some food residues also complained that it does not recognize the road, undisciplined, watermelon sub can only continue to move forward slowly with a regrettable mood. However, the more it went forward "sludge" more, but also a hidden through a stench, and finally, it really can not stand the stench, it rushed from the "gate" ----- anus ran out. At this time, the student's stomach began to hurt, he rushed to the toilet, food residues through the anus after discharge, into feces. Only watermelon seeds or the original, black, round, no change at all, this is it is not digested!