ANATOMY

Detailed explanation-1: -Brain natriuretic peptide is another hormone produced by the heart which is also called a ventricular natriuretic peptide. This is secreted by the human heart when there an increase in ventricular blood volume. The function of ANP is to reduce the plasma volume by increasing the renal excretion of sodium ions.

Detailed explanation-2: -Atrial natriuretic factor (ANF) is a 28 amino acid polypeptide hormone secreted mainly by the heart atria in response to atrial stretch. ANF acts on the kidney to increase sodium excretion and GFR, to antagonize renal vasoconstriction, and to inhibit renin secretion.

Detailed explanation-3: -Atrial natriuretic peptide (ANP) is a cardiac hormone that regulates salt-water balance and blood pressure by promoting renal sodium and water excretion and stimulating vasodilation.

Detailed explanation-4: -Atrial natriuretic factor: a hormone secreted by the heart.

Detailed explanation-5: -ANH is part of a peptide hormonal system consisting of a 126-amino acid (a.a.) prohormone synthesized mainly within myocytes of the heart and stored in storage granules within the heart for release into the circulation (16).