Urine flows from the kidneys to the urinary bladder through which structure?

Urine flows from the kidneys to the urinary bladder through which structure?

• A. Urethra
• B. Nephron
• C. Medulla
• D. Ureter

Answer: (D)

Urine is moved from the kidneys to the urinary bladder through the ureter. The ureter is a pair of muscular tubes that transport urine by rhythmic smooth-muscle contractions called peristalsis, carrying it from the renal pelvis down into the bladder. The nephron is where urine is formed, not a transport passage. The medulla is a region inside the kidney, not a conduit for urine to travel. The urethra is the duct that carries urine out of the body from the bladder. So the correct structure connecting kidney to bladder is the ureter.

Urine is moved from the kidneys to the urinary bladder through the ureter. The ureter is a pair of muscular tubes that transport urine by rhythmic smooth-muscle contractions called peristalsis, carrying it from the renal pelvis down into the bladder. The nephron is where urine is formed, not a transport passage. The medulla is a region inside the kidney, not a conduit for urine to travel. The urethra is the duct that carries urine out of the body from the bladder. So the correct structure connecting kidney to bladder is the ureter.