The ejection of milk that occurs while the infant is suckling is mediated by
A) prolactin -induced myoepithelial cell contraction.
B) oxytocin -induced myoepithelial cell contraction.
C) local reflex -induced myoepithelial cell contraction.
D) acetylcholine -induced myoepithelial cell contraction.
E) myogenic contraction of myoepithelial cells.

Question

Quizplus · Accepted Answer

The ejection of milk during suckling is mediated by oxytocin-induced myoepithelial cell contraction. Oxytocin is released from the posterior pituitary in response to suckling, leading to the contraction of myoepithelial cells around the alveoli in the breast, which helps to expel milk through the ducts.

The Ejection of Milk That Occurs While the Infant Is