välissulgurlihasega

Välissulgurlihasega refers to the external anal sphincter muscle. This is a voluntary muscle that surrounds the anus, playing a crucial role in fecal continence. It is one of two sphincters that control defecation, the other being the internal anal sphincter, which is involuntary. The external anal sphincter is composed of striated muscle fibers, allowing for conscious control over bowel movements. Its primary function is to prevent the involuntary passage of stool and gas. When the rectum fills with feces, signals are sent to the brain, allowing for a conscious decision to either relax or contract the external anal sphincter. Contraction maintains continence, while relaxation allows for defecation. Damage or dysfunction of this muscle can lead to fecal incontinence, impacting an individual's quality of life. Conditions affecting the nervous system or direct trauma to the pelvic floor can impair the function of the external anal sphincter.