Atrial distension is a stimulus for the secretion of atrial natriuretic factor,which stimulates the reabsorption of sodium by the kidneys.

Question

Quizplus · Accepted Answer

Atrial distension actually suppresses the secretion of aldosterone, which in turn increases the excretion of sodium by the kidneys, rather than stimulating the reabsorption of sodium. Atrial natriuretic factor (ANF) is actually secreted in response to atrial distension to promote the excretion of sodium and water by the kidneys, thereby reducing blood volume and blood pressure.

Atrial Distension Is a Stimulus for the Secretion of Atrial