Question

Why Missing Of Menses Is The First Indication Of Pregnancy

Answer 1

Answer:

No shedding of endometrium takes place in the presence of fertilized egg.

Explanation:

Answer 2

Answer:

(1) Menstruation Occurs if there is no fertilization of ovum.

(2) The endometriunm of uterus along with unfertilized egg is given out in the form of menstrual flow.

(3) The sloughing off uterine endometrium takes place due to degeneration of corpus luteum.

(4) In the absence of functional corpus luteum progesterone levels fall dow. However, if the ovum is fertilized, the corpus luteum is maintained and it secretes progesterone which maintains ihe uterine endometrium. In such case, further growth of ovarian follicles and ovulation remains suspended and woman is said to be pregnant.

(5) Endometrial wall of uterus now thickensband helps in the growth of placenta. Thusbduring pregnancy. menses will not take place.