Question

. Trace the development of the foetus from the first to third trimester of pregnancy

Answer 1

Here is the description of the developmental sequence of foetus -

1. In one month of pregnancy of a woman, the heart of the embryo is developed.

2. The foetus then starts developing digits as well as limbs at the end of the 2nd month of pregnancy.

3. When the first trimester ends, i.e., after 12 weeks, organ systems develops.

4. Hair comes out on the head in the 5th month.

5. When second trimester ends, the body of the foetus gets covered by hairs. Also separation of eye lids can be seen. Eyelashes also develops.

6. The foetus becomes fully developed at the end of 9 months.