Chapter 20, Problem 26P

Summary Introduction

To determine:

How the back flow of urine into the ureters from the urinary bladder is prevented?

Introduction:

Urine is a pale yellowish liquid that is excreted by the body through the urethra. It is formed when the kidney filters the blood contents to remove the waste components from the body. The renal tubules are involved in filtration and then the urine is collected in the bladder and expelled out. It moves from the renal pelvis to the urinary bladder by means of muscular peristalsis. The urine enters the bladder in such a way that it prevents the backflow of the urine into the ureters