The hormone that stimulates contraction of smooth-muscle-like cells in the mammary gland resulting in milk being made available to the suckling newborn is called
A)oxytocin
B)vasopressin
C)prolactin
D)estrogen
E)progesterone

Question

Quizplus · Accepted Answer

Oxytocin is the hormone that stimulates the contraction of smooth-muscle-like cells in the mammary gland, which results in milk being made available to the suckling newborn. This process is known as the let-down reflex. Vasopressin, prolactin, estrogen, and progesterone do not play a direct role in milk letdown.

The Hormone That Stimulates Contraction of Smooth-Muscle-Like Cells in the Mammary