Human Reproduction Question 41
41. Menstrual flow occurs due to lack of :
(a) $FSH$
(b) Oxytocin
(c) Vasopressin
(d) Progesterone
Show Answer
Answer : d
Hints & Solutions
(d)
During menstrual or bleeding phase which comprises of 3 - 5 days out of 28 days menstrual cycle, the production of $LH$ from the anterior lobe of the pituitary gland is considerably reduced. The withdrawal of this hormone causes degeneration of corpus luteum and therefore, progesterone production is reduced. Production of estrogens is also reduced in this phase.
