Q. Menstruation is initiated by
(a) a sudden release of FSH from the anterior pituitary.
(b) a lack of estrogens and progesterone due to degeneration of corpus luteum.
(c) an increased released of estrogens and progesterone from the corpus luteum.
Dear student.
The correct answer is.
(b) A lack of estrogens and progesterone due to degeneration of corpus luteum.
The ovary releases one egg every month. The uterus also prepares itself every month to receive a fertilized egg. The inner uterus lining (endometrium) becomes thick and is supplied with blood to nourish the embryo. If the egg is not fertilized, then the uterus lining is not required. Hence, it breaks down and is released in the form of blood and mucous through the vagina. This process lasts for 2-8 days. This cycle occurs every month and is known as menstruation.
Regards.
The correct answer is.
(b) A lack of estrogens and progesterone due to degeneration of corpus luteum.
The ovary releases one egg every month. The uterus also prepares itself every month to receive a fertilized egg. The inner uterus lining (endometrium) becomes thick and is supplied with blood to nourish the embryo. If the egg is not fertilized, then the uterus lining is not required. Hence, it breaks down and is released in the form of blood and mucous through the vagina. This process lasts for 2-8 days. This cycle occurs every month and is known as menstruation.
Regards.