An infant\'s suckling at the mother\'s breast stimulates the hypothalamus to sec

Question

An infant's suckling at the mother's breast stimulates the hypothalamus to secrete a "releasing hormone" that targets the anterior pituitary. The anterior pituitary secretes the hormone prolactin, which induces the release of milk from the mammary glands. The infant suckles more, stimulating the release of more prolactin and more milk. This is an example of _______ feedback in which __________ is a tropic hormone.

A) negative; prolactin
B) positive; prolactin
C) negative; releasing hormone
D) positive; releasing hormone

Explanation / Answer

Answer: [D] Positive, Releasing hormone More suckling = More positive feedback = More milk... yum Tropic hormone is the initial hormone that signals for the release of other hormones.

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