AP BIOLOGY

Detailed explanation-1: -The kidney is the chief excretory organ in vertebrates to remove urea and nitrogenous wastes from the body of the vertebrates.

Detailed explanation-2: -The kidney is the major excretory organ in the body. Excess urea, water and salts in the blood are filtered and expelled in the form of urine.

Detailed explanation-3: -Why are the kidneys important? Your kidneys remove wastes and extra fluid from your body. Your kidneys also remove acid that is produced by the cells of your body and maintain a healthy balance of water, salts, and minerals-such as sodium, calcium, phosphorus, and potassium-in your blood.

Detailed explanation-4: -The kidneys are excretory organs that perform three main functions to produce urine, filtration, reabsorption and secretion. They are situated at the back of the peritoneal cavity.