Increase in the concentration of which of the following does not increase blood pressure/volume?
An increase in blood flow to the atria of the heart can cause the release of Atrial Natriuretic Factor (ANF). ANF can cause vasodilation (dilation of blood vessels) and thereby decrease the blood pressure. ANF mechanism, therefore, acts as a check on the renin-angiotensin mechanism.
Renin, aldosterone and ADH increase the blood pressure.