Human anatomy of the anorecturm (anus and rectum)<unk>  (or<unk>  is the final act of digestion, by which organisms eliminate a solid, semisolid, or liquid waste material known as feces from the digestive tract via the anus. The act has a variety of euphemisms ranging from the common, like pooping, to the technical, e.g. bowel movement. The topic, usually avoided among polite company, can become the basis for some potty humour. Humans expel feces with a frequency varying from a few times daily to a few times weekly. Waves of muscular contraction (known as peristalsis) in the walls of the colon move fecal matter through the digestive tract towards the rectum. Undigested food may also be expelled this way, in a process called egestion. When birds<unk> ecate, they also expel urine and urates in the same mass, whereas other animals may also urinate at the same time, but spatially separated.<unk>  may also accompany childbirth and death. Babies<unk> ecate a unique substance called meconium prior to eating external foods. There are a number of medical conditions associated with<unk> , such as diarrhea and constipation, some of which can be serious. The feces expelled can carry diseases, most often through the contamination of food. E. coli is a particular concern. Before potty training, human feces are most often collected into a diaper. Thereafter, in many societies people commonly<unk> ecate into a toilet. However, open<unk> , the practice of<unk> g outside without using a toilet of any kind, is still widespread in some developing countries. Some people<unk> ecate into the ocean. First world countries use sewage treatment plants and/or on-site treatment.
Defecation
Inspissation
Fecal impaction
Subluxation
Rectal foreign body
Vesicointestinal fistula
Rectal douching
Evisceration 