ANATOMY

Detailed explanation-1: -The kidneys maintain homeostasis by controlling the amount of water, ions, and other substances in the blood. Kidneys also secrete hormones that have other homeostatic functions.

Detailed explanation-2: -The kidneys regulate circulatory volume by controlling sodium and water balance, thus maintaining extracellular fluid volume (ECFV) homeostasis. Simply put, an increase in sodium and water consumption leads to an increase in ECFV, which in turn increases blood volume.

Detailed explanation-3: -Water homeostasis is achieved by regulation of water intake and water loss by the kidneys. The former is achieved by sensations of thirst that motivate water acquisition, whereas the latter is regulated by the antidiuretic action of vasopressin.

Detailed explanation-4: -Water balance While almost a liter of water per day is lost through the skin, lungs, and feces, the kidneys are the major site of regulated excretion of water. One way the the kidneys can directly control the volume of bodily fluids is by the amount of water excreted in the urine.

Detailed explanation-5: -The kidneys are powerful chemical factories that perform the following functions: remove waste products from the body. remove drugs from the body. balance the body’s fluids.