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Hormone Receptors and Action

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Questions and Answers

What is the effect of prolactin on the breast?

Inhibits the effects of oxytocin
Inhibits the secretion of casein and lactalbumin
Stimulates the secretion of dopamine
Increases mRNA and production of casein and lactalbumin (correct)

What is the effect of dopamine on prolactin secretion?

Has no effect on its secretion
Stimulates its secretion
Inhibits its secretion (correct)
Stimulates the secretion of oxytocin

What is the effect of exercise on prolactin secretion?

Decreases its secretion
Increases its secretion (correct)
Has no effect on its secretion
Stimulates the secretion of oxytocin

What happens to prolactin levels during pregnancy?

They increase (B) Signup and view all the answers

What is the function of oxytocin in the posterior pituitary gland?

It stimulates the contraction of uterine muscles during childbirth (C) Signup and view all the answers

What is the source of hormones in the posterior pituitary gland?

It consists of axon terminals of hypothalamic neurons (D) Signup and view all the answers

What is the effect of TRH on prolactin secretion?

It stimulates its secretion (A) Signup and view all the answers

What is the function of ADH in the body?

It regulates water reabsorption in the kidneys (C) Signup and view all the answers

How is ADH synthesized?

It is synthesized as a pre-prohormone and processed into a nonapeptide (C) Signup and view all the answers

What is the role of the hypothalamus in controlling posterior pituitary secretions?

It controls the secretion of hormones through nervous signals (D) Signup and view all the answers