ANATOMY

Detailed explanation-1: -The tube that carries urine from the kidney to the bladder.

Detailed explanation-2: -Ureters are long, narrow tubes that drain urine from your kidneys to your bladder. Normally one ureter leads from each kidney to your bladder. In the case of duplicated systems, two ureters drain a single kidney. One ureter drains the upper pole of your kidney and the other drains the lower pole.

Detailed explanation-3: -The ureters connect to the bladder through a tunnel that acts as a valve to keep urine from flowing backward. Sometimes, a ureter has a bad connection to the bladder wall. When there is not enough of the tunnel at the connection point, reflux will occur.

Detailed explanation-4: -So, the correct answer is ‘Ureter’.

Detailed explanation-5: -The renal vein takes blood back to the body after it has passed through the kidney. The renal hilum is the area where the renal artery, renal vein and ureter enter the kidney.