Menstrual flow occurs due to lack of 

(a) progesterone 

(b) FSH 

(c) oxytocin 

(d) vasopressin

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1 Answers

Correct option (a) progesterone 

Explanation

Menstrual flow occurs due to the lack of progesterone. 

Progesterone is secreted by corpus luteum and is essential fol the maintenance of endometrium, This endometrium is responsible for implanation of the fertilised ovum, i.e. Pregnancy. 

FSH Stimulates gonadal activity and also called as gonadotrophins. 

Oxytocin Stimulates contraction in uterus during childbirth. 

Vasopressin Stimulate resorption of water and electrolytes by the distal tubules, also called as Antidiuretic Hormone (ADH).

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