PATHOLOGY

Detailed explanation-1: -Urethra. This tube allows urine to pass outside the body. The brain signals the bladder muscles to tighten, which squeezes urine out of the bladder. At the same time, the brain signals the sphincter muscles to relax to let urine exit the bladder through the urethra.

Detailed explanation-2: -The ureters are about 8 to 10 inches long. Muscles in the ureter walls tighten and relax to force urine down and away from the kidneys. Small amounts of urine flow from the ureters into the bladder about every 10 to 15 seconds. Sometimes the ureters can become blocked or injured.

Detailed explanation-3: -And since the urethra is the tube through which urine passes from the bladder to the outside of the body, it can make peeing very uncomfortable-sometimes even excruciating. This article explains the causes, diagnosis, complications, and treatment of urethral pain.