Anothe rhormone, __, opposes the RAAS. THe walls of the atria of the heart release __ in response to an increase in blood volumje and pressure. __ inhibits the release of renin from the JGA, inhibits NaCl reabsorption by the collecting ducts, and reduces aldosterone release from the adrenal glands. These actions lower blood volume and pressure. THus, __, the __ and __ provide an elaborate sstem of checks and balances that regulate the kidneys ability to control the osmolarity, salt concentration, volume and pressure of blood. The precise regulatory role of ANP is area of active research.
- atrial natriuretic peptide (ANP_ x4