How do the kidneys contribute to homeostasis? Multiple select question.Secrete digestive enzymesMaintain acid-base balanceMaintain water-salt balanceExcrete metabolic wastes

The kidneys contribute to homeostasis in several ways:

1. Maintain acid-base balance: The kidneys help control the pH level in our bodies by excreting hydrogen ions into the urine and reabsorbing bicarbonate from the urine.

2. Maintain water-salt balance: The kidneys regulate the water and electrolyte balance in the body by adjusting the volume and composition of the urine. They do this by reabsorbing water and other molecules from the initial urine and returning them to the blood.

3. Excrete metabolic wastes: The kidneys remove waste products from the metabolism like urea, uric acid, and creatinine by filtering the blood and excreting these wastes in the urine.

The option "Secrete digestive enzymes" is not a function of the kidneys. Digestive enzymes are primarily produced by the pancreas and the small intestine.