detrusor

1. (anatomy) A smooth muscle in the wall of the bladder that relaxes to allow urine to be stored and contracts to expel it; often used attributively.Examples: "The brain contains multiple centers that modulate detrusor control. Although the exact mechanism remains unclear, the net effect of the brain's influence on the bladder is to inhibit detrusor contractions until an appropriate time and place for urination."; "Detrusor overactivity is defined by the ICS as a urodynamic observation characterised by involuntary detrusor contractions during the filling phase which may be spontaneous or provoked."; "2009, Christopher R. Chapple, Scott A. MacDiarmid, Anand Patel, Urodynamics Made Easy, Elsevier (Churchill Livingstone), 3rd Edition, page 88, During voiding the patient's bladder should empty completely with a maximum detrusor pressure of 25–50 cm H₂O."