Q. During embryonic development of human, limbs, and digits are formed during
NTA AbhyasNTA Abhyas 2020Human Reproduction
Solution:
At the end of the 1st month The heart is formed (Listening of heart sound by stethoscope is the first sign of growing foetus) At the end of the 2nd month Limbs and digits are formed At the end of 1st trimester Formation of major organ systems e.g. limbs and external genitalia. In 5th month First movements and appearance of hair on the head. At the end of 2nd trimester The body is covered with fine hairs. Eyelids separate and eyelashes are developed.
| At the end of the 1st month | The heart is formed (Listening of heart sound by stethoscope is the first sign of growing foetus) |
| At the end of the 2nd month | Limbs and digits are formed |
| At the end of 1st trimester | Formation of major organ systems e.g. limbs and external genitalia. |
| In 5th month | First movements and appearance of hair on the head. |
| At the end of 2nd trimester | The body is covered with fine hairs. Eyelids separate and eyelashes are developed. |