Describe excretory system of frog.

Explanation

The elimination of nitrogenous wastes is called excretion. These wastes are removed by well developed excretory system. The excretory system consists of a pair of kidneys, ureters, cloaca and urinary bladder. Kidney : These are compact, dark red and bean like structures situated a little posteriorly in the body cavity on both sides of vertebral column. Each kidney is composed of several structural and functional units called uriniferous tubules or nephrons. Two ureters emerge from the kidneys in the male frogs. The ureters act as urinogenital duct which opens into the cloaca. Urinary bladder : The thin-walled urinary bladder is present ventral to the rectum which also opens in the cloaca. The frog excretes urea and thus is a ureotelic animal. Excretory wastes are carried by blood into the kidney where it is separated and excreted.