Anatomy and Physiology II Practice Test

The structure that connects the kidney to the bladder is known as the ureter. Each kidney has a ureter that carries urine produced in the kidney down to the bladder for storage before it is expelled from the body. The ureters are muscular tubes lined with smooth muscle that help facilitate the movement of urine through peristaltic contractions.

In contrast, the renal vein and renal artery are related to blood circulation. The renal vein is responsible for draining deoxygenated blood away from the kidney, while the renal artery supplies the kidney with oxygenated blood. The urethra, on the other hand, is the duct through which urine is expelled from the bladder to the outside of the body, serving a different function entirely from that of the ureter.