The anal sphincter stops feces from falling out.
It keeps the anus closed
The anal canal has a ring of muscle, called the anal sphincter
Yes there is the Internal and External Anal Sphincters.
Anal Sphincter
You can imagine the situation, in which case the anal sphincter in involuntary. In that case you defecate with out your knowledge.
Anal sphincter.
a ring of muscle that controls the release of an organs products. EXAMPLE: Pyloric Sphincter controls release of chyme. Cardiac Sphincter controls deposition of food into the stomach from the esophagus. External Urethral Sphincter controls release of urine. External Anal Sphincter controls release of defecation.
The internal urethral sphincter an involuntary sphincter that keeps the urethra closed when urine is not being used. The external urethral sphincter is fashioned by skeletal muscles as the urethra passes thorugh the pelvic floor.This sphincter is voluntary controlled.
The anal sphincter and the bladder sphincter in potty trained children and in most other people whose spinal cords are intact or are not suffering from some diseases.
Assholicus Maximus & Buttockical Minimus
outer anal sphincter
SPHINCTER : the muscle that controls the anal opening, or more generally any tissue or muscle around the opening to an organ.
Yes, you can. The anal sphincter muscle relaxes after death and if there is any feces in the rectal vault, it can be passed.