MICROANATOMY

Detailed explanation-1: -Urea, together with water and other waste substances, forms the urine as it passes through the nephrons and down the renal tubules of the kidney. Two ureters. These narrow tubes carry urine from the kidneys to the bladder.

Detailed explanation-2: -Urine drains from the renal pelvis of each kidney into the ureters. The ureters are long, thin tubes made of smooth muscle. Contractions of the smooth muscle push urine down through the ureters and into the bladder.

Detailed explanation-3: -The ureters are tubes that carry urine from the kidneys to the bladder. The bladder stores urine. The urethra is a tube that carries urine from the bladder to the outside of the body.