The stimulus that directly triggers release of ANP is
A) decreased pressure detected by baroreceptors in the aorta and carotid arteries.
B) increased stretch of the heart atria.
C) increased saltiness in the cerebrospinal fluid bathing the hypothalamus of the brain.
D) increased saltiness of tubular fluid in the proximal convoluted tubule.

Question

Quizplus · Accepted Answer

ANP (Atrial Natriuretic Peptide) is released in response to increased stretch of the heart atria, which occurs when there is an increase in blood volume or pressure.

The Stimulus That Directly Triggers Release of ANP Is