AP BIOLOGY

Detailed explanation-1: -Antidiuretic hormone (ADH) helps regulate the amount of water in your body. It works to control the amount of water your kidneys reabsorb as they filter out waste from your blood. This hormone is also called arginine vasopressin (AVP).

Detailed explanation-2: -ADH decreases the volume of urine by increasing the reabsorption of water in the kidneys. ADH causes contraction of vascular smooth muscles, constriction of arterioles, and peripheral vasoconstriction.

Detailed explanation-3: -Higher concentrations of anti-diuretic hormone cause blood vessels to constrict (become narrower) and this increases blood pressure. A deficiency of body fluid (dehydration) can only be finally restored by increasing water intake.

Detailed explanation-4: -Aldosterone causes an increase in salt and water reabsorption into the bloodstream from the kidney thereby increasing the blood volume, restoring salt levels and blood pressure.

Detailed explanation-5: -A hormone that helps blood vessels constrict and helps the kidneys control the amount of water and salt in the body. This helps control blood pressure and the amount of urine that is made.