The atrial muscle of the hea produces a hormone that:
Atrial natriuretic peptide It is produced mainly by cardiac muscle cells of the right atrium. It inhibits the release of renin and causes the kidneys to decrease the resorption of sodium and water. Therefore it decreases blood pressure
Decreases blood pressure.
Increases blood pressure.
Causes vasoconstriction.
Facilitates the release of renin.
Circulation