Question

How would you expect aldosterone and vasopressin levels to change if a person had also run a race and had not taken in any water and produced a copious amount of sweat of 10 meq/l?

Answer 1

Vasopressin controls the excretion of water from the kidneys, when there is shortage of water in the body system, vasopressin will be secreted and its concentration will increase in the body system. Aldosterone is secreted by the adrenal cortex. It  makes the body to retain more water by increasing the level of potassium and sodium ions in the blood, which causes the body to retain more water.These two hormones regulates the amount water that leaves the body system.