Question

The diagram given below is that of a developing human foetus in the womb. Study the same and answer the questions that follow :

(a) Name the parts '1' to '5' indicated by guidelines.

(b) What term is given to the period of development of the foetus in the womb?

(c) How many days does the foetus take to be fully developed?

(d) Mention two functions of the parts labelled '2' other than its endocrine function.

(e) Name any one hormone produced by the part labelled '2'.

Answer 1

(a)

1. umbilical cord,
2. placenta,
3. amnion,
4. the mouth of the uterus or Cervix
5. the muscular wall of the uterus or myometrium

(b) Gestation
(c) 280 days
(d) Placenta provides the foetus with oxygen and nutrients. In addition, the placenta also removes carbon dioxide and waste products of the foetus.
(e) human chorionic gonadotropin or hCG, Progesterone