In Response to Increased Blood Volume, ANP is Secreted by Cells

Question

In response to increased blood volume, ANP is secreted by cells in the
A)kidneys
B)adrenal glands
C)pituitary gland
D)hypothalamus
E)heart

Accepted Answer

ANP (atrial natriuretic peptide) is secreted by cells in the heart in response to increased blood volume and stretching of the atrial walls. Its main function is to promote water and sodium excretion, which helps to decrease blood volume and blood pressure.