THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Incontinence is defined as the involuntary leakage of urine from the bladder. Incontinence can affect both men and women in any age group but is more common in women and the elderly.

Detailed explanation-2: -Continence and micturition involve urethral closure. Especially, insufficient strength of the pelvic floor muscles including the urethral sphincter muscles causes urinary incontinence (UI).

Detailed explanation-3: -At an appropriate time and place, the external urethral sphincter can then be voluntarily relaxed, allowing the passing of urine. A secondary function of the urethral sphincter complex is to prevent retrograde ejaculation of semen into the bladder. In males, semen and urine share the urethra as a passageway.

Detailed explanation-4: -The Two Urethral Sphincters Maintain Urinary Continence The internal sphincter is involuntary. It surrounds the opening of the bladder to the urethra and relaxes to allow urine to pass. The external sphincter is voluntary. It surrounds the urethra outside the bladder and must be relaxed for urination to occur.