the anal sphincter
Anal manometry is performed to assess the anal sphincter , pelvic floor, and associated nerves.
Then your brain tells your pelvic floor muscles to relax and your sphincter (the opening at the neck of your bladder) to open.
This rapidly closes the duodenal sphincter to contain the stomach contents.
This smooth muscle is the involuntary sphincter of the posterior urethra in the male.
It is girdled by the external anal sphincter , a striated muscle structure that is part of the pelvic floor musculature.
If technical guidelines are rigorously followed, the feared complications associated with surgical procedures, such as anal stricture and sphincteric injuries, are largely reduced.
Eighty-five percent of the patients had intrinsic sphincteric deficiency, while 15 percent had genuine stress urinary incontinence.
Accompanying sensory and sphincteric symptoms are also common.
In addition, with respect to the other muscles in the body with an analogous sphincteral activity (gastrointestinal and genitourinary tracts), it is distinguished by the mechanism of contraction, rather than of dilation.