Draw a diagram of the human excretory system and label the various parts.

The human excretory system consists of two kidneys, two ureters, one urinary bladder, and one urethra.

1. Kidneys are the bean-shaped structures located in the abdominal cavity just behind the vertebral column.
2. Ureters are tubes that transport urine from kidneys to the urinary bladder.
3. Urinary bladder is the reservoir of urine and is located in the pelvic cavity.
4. Urethra is a canal that extends from the neck of the bladder to the exterior through an external urethral orifice.