MICROANATOMY

Detailed explanation-1: -Urine is transported out of the papilla by a peristaltic process to the pelvis and ureters and then is stored in the bladder. Peristalsis is initiated in the renal pelvis and is propagated along the urinary tract by smooth muscle cells in the ureter coat.

Detailed explanation-2: -The ureter carries urine from the kidney to your bladder.

Detailed explanation-3: -Flow of urine through the ureter: a collapsible, muscular tube undergoing peristalsis.

Detailed explanation-4: -2.5 Upper urinary tract physiology. Under normal circumstances, the peristaltic waves ensure the propulsion of the urinary bolus toward the bladder. As the urine is collected in the renal pelvis, the pelvic pressure increases and initiates a peristaltic contraction that is propagated along the ureter to the bladder.