How big is the five-month-old fetus 1, and how pregnant 17 weeks: the fetus is about 13cm from head to hip and weighs about 150-200 grams. The average diameter of biparietal is 3.97±0.44cm, the average abdominal circumference is11.491.62 cm, and the femur length is 2.52±0.44cm.
2, pregnancy 18 weeks: the fetus is about 14 cm long from head to hip and weighs 200 grams. The average diameter of biparietal is 4.25±0.53cm, the average abdominal circumference is12.41l.89 cm, and the femur length is 2.710.46 cm.
3, pregnancy 19 weeks: the fetus is about 15 cm from head to hip and weighs 225 grams. The average diameter of biparietal is 4.52±0.53cm, the average abdominal circumference is 13.59 2.30cm, and the femur length is 3.03±0.5cm.
4. 20 weeks of pregnancy: The fetal length from head to hip is about 16.5cm, and from head to toe is about 25.4 cm, weighing 250 grams. The average diameter of biparietal is 4.88 0.58cm, the average abdominal circumference is 14.80 l.89 cm, and the femur length is 3.35 O.47 cm.
Five-month-old pregnant mother must have a pregnancy test regularly during pregnancy, so what is the five-month-old pregnant mother's color ultrasound? Let's learn together.
It can be seen from the color Doppler ultrasound of the fetus at the fifth month of pregnancy that a protective surface called fetal sebum will be formed on the surface of the fetus. During this period, four-dimensional color Doppler ultrasound shows that the fetus is a pear, and the fetal skin is ruddy and transparent at the end of pregnancy 16, and subcutaneous blood vessels can be seen. According to the external genitalia, male or female can be distinguished (with the help of ultrasound); The respiratory muscles begin to move; /kloc-After 0/month, the skin gradually turned dark red and opaque, and began to grow fetal hair, fetal hair, eyebrows and nails. The fetal subcutaneous fat in this period is very thin; The head is large, with a head circumference of about 17.6 cm, the size of an egg, accounting for about 1/3 of the body length; The bones and muscles are stronger than before, and the limbs are more active, so the mother can feel the fetal movement. Four-dimensional color Doppler imaging technology can also suck fingers, yawn and other lovely actions of the baby. The growth and development of the fetus after five months of pregnancy are as follows:
First, the five senses: during this period, the eyebrows and eyelids of the fetus have matured, but the eyelids are still closed, and the ear bones of the fetus have formed and grown to a normal position.
Second, limbs: when the fetus is pregnant for five months, the fingers and toes of the fetus have already grown nails, which are in a raised state, and the limbs of the fetus are proportional to other parts of the body.
3. Organs: When pregnant for five months, the nerve cells of the fetal brain such as taste, smell, touch, vision and hearing are in a state of differentiation. If the fetal boy is examined, his genitals can be seen. If it is a girl, it can be found that her uterus and fallopian tubes have been formed and put in place.