Which is an example of negative feedback?

Nursing action stimulates the hypothalamus to release oxytocin that triggers mammary gland milk production.

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When the blood becomes dilute, ADH is no longer released from the hypothalamus.

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Uterine stretching sends nerve impulses to the hypothalamus that releases oxytocin that triggers uterine contraction.

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TRH stimulate the anterior pituitary to release thyroid-stimulating hormone.

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Solution

The correct option is B When the blood becomes dilute, ADH is no longer released from the hypothalamus.
When a high level of particular hormone inhibits their further secretion is called as negative feedback. As the level of water in the blood falls, negative feedback ensures that the amount of ADH rises. As the level of water in the blood rises, negative feedback ensures that the amount of ADH falls. Thus, the correct answer is option B.

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