Fetal genital development process_child development process in the uterus

Friends who understand biology know that the gender of the fetus has an extremely important relationship with the father. If it is a boy, it is the combination of the father's Y and the mother's x. If it is a girl, it is the combination of the father's x and the mother's x. Under normal circumstances, the gender of the fetus begins to develop when the expectant mother is 12 weeks pregnant. Under normal circumstances, the gender of the fetus can be determined by B-ultrasound at 16 weeks.

1. Development time of fetal reproductive organs

Theoretically, the external genitalia of the fetus are generally developed by the 12th week of pregnancy, and the gender of some parts can be distinguished. The sex of the fetus can be determined by the 16th week of pregnancy. Moreover, the accuracy of color ultrasound is related to the doctor's skills and the clarity of the equipment.

2. Development time of each organ of the fetus

2-3 weeks

Organ system development: The fetus's blood circulation begins, and thyroid tissue, kidneys, eyes, and ears begin to form.

4 weeks

Organ system development: Limbs begin to develop, brain, spinal cord, mouth, digestive tract begin to form

5 weeks

Organ system development: Cranial nerves appear, nerves in muscles begin to distribute, skeleton forms

6 weeks

Organ system development: muscle development, oral and nose development, trachea and bronchi appear, liver produces red blood cells

7 weeks

Organ system development: stomach development is complete, optic nerves are formed, sex organs begin to differentiate

8 weeks

Organ system development: finger formation, lip formation, ear formation

10 weeks

Organ system development: bladder formation, fingernails and toenails formation

12 weeks

Organ system development: Lungs take shape, thyroid gland secretes hormones

16 weeks

Organ system development: thin skin, respiratory movement

24 weeks

Organ system development: eye formation complete

28 weeks

Organ system development: The nervous system begins to regulate body functions

36 weeks

Organ system development: Sebaceous glands are active

40 weeks

Organ system development: biparietal diameter greater than 9 cm, plantar skin texture formation

This article introduces in detail the development time of the fetus's reproductive organs, and also introduces the development of the fetus's organs in different time periods. As a pregnant woman, you can learn about the development time of these organs and actively choose your diet according to the development of different organs during pregnancy to better promote fetal development.