The urinary system

The main excretory system is the urinary system: two kidneys, two ureters, the urinary bladder and the urethra.

Figure to be added

Figure — the human urinary system: the two kidneys at the back of the abdomen with the renal artery and vein, the ureters, the bladder and the urethra.

Kidneys → Ureters → Bladder → Urethra

Kidneys

Bean-shaped, one each side of the backbone. They filter the blood and make urine.

Ureters

Carry urine from each kidney to the bladder.

Bladder

A muscular bag that stores urine for a while.

Urethra

Carries urine out of the body.