Heart Endocrine Function - Anatomy & Physiology

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The Heart releases Natriuretic Peptides which act to lower blood pressure and thus work antagonistically to the Renin-Angiotensin-Aldosterone System.

Natriuretic Peptides
Hormone Secreted From Action
Atrial Natriuretic Peptide Atrial Myocytes Released in response to triggers including atrial stretch, ANP increases sodium and thus water excretion at the kidneys, reducing blood volume and thus pressure. It also inhibits the Renin-Angiotensin Aldosterone System and relaxes arterioles. further reducing systemic blood pressure.
B-Type Natriuretic Peptide Ventricles of the Heart Decreases vascular resistance, in the same ways as ANP but is 10x LESS potent.

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