anus
anus (noun) hole in the rectum. The anus is the sphincter muscle that controls the lower opening of the digestive tract. This muscle sphincter keeps the anus closed and only opened during excretion to pass faeces present in the anal canal.
Meaning and uses
The anus is the opening through which the rectum, the terminal portion of the large intestine (colon), connecting one outside the body. The anal sphincters features enabling them, in normal times, to stay closed and keep the feces inside the rectum. It opens during defecation.
Orifice of the rectum through which bowel ends. Depression offered quite often, before the summit, the dorsal part of the outer face of a valve of bivalve shell, when it is viewed on both valves at once
Output end of the rectum and the gastrointestinal tract.
Anatomy, coloproctology – N. m. * anus: the Latin anulus [year (o) -,-anal] ring on the anus. External termination of the rectum, the last part of the large intestine, which controls the passage of feces or feces. …
opening of the rectum which passes feces
anal – odd fin between the tail fin and ventral fins * * position posterior to the anus.