Atrial natriuretic hormone (ANH)stimulates the kidneys to excrete salt and water in the urine.Why does it make sense that the heart is the source of ANH?
A)The heart is a major endocrine organ that releases several hormones.
B)ANH helps regulate blood pressure,which is sensed by distension of the heart atria.
C)The heart is conveniently close to the hypothalamus.
D)Secretion of hormones by the heart makes it easy for them to enter the bloodstream.

Question

Quizplus · Accepted Answer

ANH helps regulate blood pressure, which is sensed by distension of the heart atria. As the heart fills with blood, the atria become distended and release ANH to signal the kidneys to excrete salt and water, thus reducing blood volume and pressure. This feedback loop makes it logical for the source of ANH to be the heart, as it is the organ that is most directly involved in regulating blood pressure.

Atrial Natriuretic Hormone (ANH)stimulates the Kidneys to Excrete Salt and Water