Question

The following diagram represents the vertical sectional view of the human female reproductive system.

(a) Label the parts indicated by the guidelines 1 to 8

(b) How does the ** prepare for the reception of zygote?

(c) What happens to the **, if fertilization fails to take place?

Answer 1

(a) 1 Fallopian Tube

2 Infundibulum

3 Ureter

4 **

5 Ovary

6 **

7 *** Bladder

8 Urethra

(b) Oestrogen secreted by the corpus luteum secrets oestrogen. Oestrogen stimulates the thickening of the endometrial wall of the **. The uterine wall becomes thickened and is supplied with a lot of blood to receive the fertilized egg.

(c) If fertilization fails to take place, the endometrial lining of the ** starts shedding on the 28th day of the menstrual cycle. Finally it is discharged out along with the unfertilised ovum as the menstrual flow.