Patient's question:
NoDoctor's answer:
By the 12th week (full March), the fetal body grows rapidly. The fetus is about 7~9 centimeters long and weighs 21~22 grams, forming a complete small humanoid figure. However, the head is large and round, accounting for half the body's length. At 12 weeks, the gender is distinct, the head and neck are clearly separated, and stimulation can trigger sucking-like movements. Eyelids may also react, and the fetus can breathe, swallow amniotic fluid, and sometimes urinate. It can also exhibit various special responses, such as moving its legs, fingers, and head. The mouth can open, close, and swallow. If the eyelids are touched, the eyes will squint. If the toes are touched, the toes will spread. By this stage, the placenta has already formed.