May 10, 2018 · A single sphincter regulates pupillary movement in each eye; however, some bodily systems require several to control their operation. In the case of the cardiovascular system, a countless number may be involved, as it is believed that tiny sphincters that wrap around blood vessels help the body moderate its blood pressure.
The anal sphincter is a muscle, and it is one of a unique group in the body because it is a sphincter. Most muscles are attached to bones, via tendons, at one or both ends.
Continued. Anal sex can carry other risks as well. Oral contact with the anus can put both partners at risk for hepatitis, herpes, HPV, and other infections.For heterosexual couples, pregnancy can occur if semen is deposited near the opening to the vagina.
Sphincter muscle: Sphincter muscle, any of the ringlike muscles surrounding and able to contract or close a bodily passage or opening. One of the most important human sphincter muscles is the sphincter pylori, a thickening of the middle layer of stomach muscle around the pylorus (opening into the small intestine)
a: an outer sphincter of striated muscle extending from the coccyx to the central tendinous part of the perineum and surrounding the anus immediately beneath the skin — called also external anal sphincter, sphincter ani externus
Lateral internal sphincterotomy is the name for the surgical operation to make a cut on the sphincter muscle of the anus.LIS is a treatment for anal fissure. More accurately, the main purpose is to help the fissure to heal by itself, by relaxing the sphincter muscle through sphincterotomy.
Definition Artificial sphincter insertion surgery is the implantation of an artificial valve in the genitourinary tract or in the anal canal to restore continence and psychological well being to individuals with urinary or anal sphincter insufficiency that leads to severe urinary or fecal incontinence.
A sphincter is a circular muscle that normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological functioning.
The external anal sphincter (or sphincter ani externus) is a flat plane of muscular fibers, elliptical in shape and intimately adherent …
An anal fissure (also called a fissure-in-ano) is a crack in the very specialized lining (anoderm) of the anal canal. The crack is most often in the midline of the back of the anus (towards the tailbone) but may also be in the midline of the front of the anal canal.