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A muscle which forms a layer of the wall of the bladder.
- ‘During normal voiding the detrusor muscle contracts and the muscles of the urethral sphincter and pelvic floor relax in a co-ordinated fashion to allow the bladder to empty.’
- ‘The detrusor, levator ani, and external sphincter muscles share the sacral nerves as a common innervation source.’
- ‘This is caused by the muscle of the bladder wall - known as the detrusor muscle - being overactive.’
- ‘The most common abnormality was an incompletely emptying bladder, either because of obstructed outflow, an underactive detrusor, or urethral stricture.’
- ‘Pressure receptors in the bladder respond to the increased urine and contract the detrusor muscle, causing the internal sphincter to relax.’
Mid 18th century modern Latin, from Latin detrus- ‘thrust down’, from the verb detrudere.
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