Assertion: Vigorous contraction of the uterus at the end of pregnancy causes expulsion of the fetus.

Question

Assertion: Vigorous contraction of the uterus at the end of pregnancy causes expulsion of the fetus.\ Reason : The stimulatory reflex between the uterine contraction and oxytocin secretion results in weakening contractions.

Professor PC Thomas Classes · Answer

(c) : Vigorous contraction of the uterus at the end of pregnancy causes parturition. Parturition is induced by a complex neuroendocrine mechanism. Oxytocin acts on the uterine muscle and causes stronger uterine contractions, which in turn stimulates further secretion of oxytocin. The stimulatory reflex between the uterine contraction and oxytocin secretion continues resulting in stronger and stronger contractions.