Related Experiment Video
Updated: Oct 14, 2026

Bladder Smooth Muscle Strip Contractility as a Method to Evaluate Lower Urinary Tract Pharmacology
Published on: August 18, 2014
Evolution of bladder contraction in course of time after implantation of a sacral anterior root stimulator
G Egon1, P Colombel, J L Isambert
1Centre Hospitalier Specialise De L'Arche, Saint Saturnin, La Milesse, Le Mans, France.
Abstract:
We reviewed bladder contraction evolution after sacral anterior root stimulator implantation in thirty patients operated on from 1984 to 1991. Two patients underwent a complete denervation with a reinnervation within a maximal time of seventeen months. One patient underwent a lesion, like a neuropraxia with a complete recovery at four months. Five patients have undergone a partial denervation with a recovery of miction by neurostimulation within the time of eighteen months. In three patients, bladder contraction disappeared for various reasons.
More Related Videos
Related Concept Videos
Muscle Stimulation Frequency
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
Urinary Bladder
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...
The Micturition Reflex
The process begins with bladder filling, where the bladder wall stretches as urine accumulates. This stretching activates the urine storage reflex, mediated by the sacral spinal segments and the pontine storage center. Efferent sympathetic impulses stimulate the detrusor muscle to relax and the internal urethral sphincter to contract, facilitating urine...
Anatomy of the Genitourinary System II: Bladder and Urethra

