And what this hormone basically does is it dilates our blood vessels. So this is a vasodilator, that basically means it increases the thickness of our blood vessels and that decreases our blood pressure. And what it also does is it decreases the amount of blood volume found inside our blood and that also decreases our blood pressure. So basically the A and P hormone is the opposite of aldosterone. So recall that aldosterone actually increases the amount of sodium that we take back into our blood. But what amp does, what the atrial natriure retic peptide hormone does is it basically increases the amount of sodium that we secrete into our urine and that decreases the amount of solute inside our blood and that ultimately increases the amount of water that leaves our blood system.