While explaining milk production and release to a group of expectant parents, the nurse educates the parents on the fact that suckling by the infant provides the stimulus for milk ejection. This suckling sends feedback to the hypothalamus, which stimulates the release of which hormone from the pituitary gland responsible for the ejection of milk into the ductal system?
A) Oxytocin
B) Prolactin
C) Progesterone
D) Follicle-stimulating hormone

Question

Quizplus · Accepted Answer

During lactation, milk is secreted by alveolar cells, which are under the influence of the anterior pituitary hormone prolactin. Milk ejection from the ductile system occurs in response to the release of oxytocin from the posterior pituitary. The suckling of the infant provides the stimulus for milk ejection. Suckling produces feedback to the hypothalamus, stimulating the release of oxytocin from the posterior pituitary. Oxytocin causes contraction of the myoepithelial cells lining the alveoli and ejection of milk into the ductal system.

While Explaining Milk Production and Release to a Group of Expectant