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  2. Detrusor muscle - Wikipedia

    en.wikipedia.org/wiki/Detrusor_muscle

    The detrusor muscle, also detrusor urinae muscle, muscularis propria of the urinary bladder and (less precise) muscularis propria, is smooth muscle found in the wall of the bladder. The detrusor muscle remains relaxed to allow the bladder to store urine , and contracts during urination to release urine.

  3. Underactive bladder - Wikipedia

    en.wikipedia.org/wiki/Underactive_Bladder

    Without diagnostic evaluation, the cause of underactive bladder is unclear, as there are multiple possible causes. UAB symptoms can accurately reflect impaired bladder emptying due either to DU or obstruction (normal or large storage volumes, elevated post-void residual volume), or can result from a sense of incomplete emptying of a hypersensitive bladder (small storage volumes, normal or ...

  4. Urinary incontinence - Wikipedia

    en.wikipedia.org/wiki/Urinary_incontinence

    Continence and micturition involve a balance between urethral closure and detrusor muscle activity (the muscle of the bladder). During urination, detrusor muscles in the wall of the bladder contract, forcing urine out of the bladder and into the urethra. At the same time, sphincter muscles surrounding the urethra relax, letting urine pass out ...

  5. Bladder - Wikipedia

    en.wikipedia.org/wiki/Bladder

    During urination, the detrusor muscle contracts, the external urinary sphincter and muscles of the perineum relax, and urine flows through the urethra [13] and exits the penis or vulva through the urinary meatus. [11] The urge to pass urine stems from stretch receptors that activate when between 300 - 400 mL urine is held within the bladder. [13]

  6. Urethral sphincters - Wikipedia

    en.wikipedia.org/wiki/Urethral_sphincters

    The internal sphincter muscle of urethra: located at the bladder's inferior end and the urethra's proximal end at the junction of the urethra with the urinary bladder. The internal sphincter is a continuation of the detrusor muscle and is made of smooth muscle, therefore it is under involuntary or autonomic control.

  7. Internal urethral sphincter - Wikipedia

    en.wikipedia.org/wiki/Internal_urethral_sphincter

    The internal urethral sphincter is a urethral sphincter muscle which constricts the internal urethral orifice.It is located at the junction of the urethra with the urinary bladder and is continuous with the detrusor muscle, [1] [2] but anatomically and functionally fully independent from it. [3]

  8. Bladder sphincter dyssynergia - Wikipedia

    en.wikipedia.org/wiki/Bladder_sphincter_dyssynergia

    Bladder sphincter dyssynergia (also known as detrusor sphincter dyssynergia (DSD) (the ICS standard terminology agreed 1998) [1] and neurogenic detrusor overactivity (NDO)) is a consequence of a neurological pathology such as spinal injury [2] or multiple sclerosis [3] which disrupts central nervous system regulation of the micturition (urination) reflex resulting in dyscoordination of the ...

  9. Overactive bladder - Wikipedia

    en.wikipedia.org/wiki/Overactive_bladder

    The amount of urine passed during each urination is relatively small. [1] Pain while urinating suggests that there is a problem other than overactive bladder. [1] Specific treatment is not always required. [1] If treatment is desired pelvic floor exercises, bladder training, and other behavioral methods are initially recommended. [3]