"anal sphincter" | Definition and Related Words

Noun

is a type of: anatomical sphincter, sphincter, sphincter muscle - a ring of muscle that contracts to close an opening
has:
- musculus sphincter ani externus - an external ring of striated muscle surrounding the anus
- musculus sphincter ani internus - an internal ring of smooth muscle formed by circular fibers of the rectum
is a part of: anus - the excretory opening at the end of the alimentary canal

same as: musculus sphincter ani, sphincter ani