MICROANATOMY

Detailed explanation-1: -Atrial natriuretic peptide (ANP) or atrial natriuretic factor (ANF) is a natriuretic peptide hormone secreted from the cardiac atria that in humans is encoded by the NPPA gene.

Detailed explanation-2: -Atrial natriuretic peptide (ANP) and B-type natriuretic peptide (BNP) are secreted from the cardiac atria and ventricles, respectively.

Detailed explanation-3: -The responsible molecule later was found to be atrial natriuretic factor (ANF), also called atrial natriuretic peptide (ANP) (de Bold, 1985). Under high blood volume and pressure, heart muscle cells release ANP into the circulation. In the kidney, ANP enhances salt and water excretion.

Detailed explanation-4: -The heart functions as an endocrine organ, releasing atrial natriuretic peptide (ANP), a hormone, in response to sodium and fluid overload. Specifically, ANP is released by cardiac myocytes in response to atrial distension. As a hormone, ANP has far-reaching multiorgan effects.