Question

What is parturition 2th biology definition?

Answer 1

parturiton is a childbirth, the process of delivering the baby and placenta from the uterus to the vagina to the outside world. Also called labour and delivery.

Answer 2

$\huge\mathtt\red{Parturition}$

$\longrightarrow$ The average duration of human pregnancy is about 9 months which is called the gestation period.

$\longrightarrow$ The act of expelling the full term foetus from the mother's uterus at the end of gestation period byvigorous contraction of uterus is called parturition.

$\longrightarrow$ It is induced by a complex neuroendocrine mechanism.

$\longrightarrow$ Parturition signals originate from the fully developed foetus and the placenta which induce mild uterine contractions called foetal ejection reflex.

$\longrightarrow$ This triggers the release of oxytocin from the maternal pituitary.

$\longrightarrow$ Oxytocin induces stronger uterine muscle contractions which in turn stimulate further secretion of oxytocins. Stimulatory reflex between contraction and oxytocin secretion results in stronger and stronger contradiction which leads to expulsion of baby out of uterus through birth canal.