Orifice at the opposite end of an animal's digestive tract from the mouth. Its function is to expel feces, unwanted semi-solid matter produced during digestion, which, depending on the type of animal, may be one or more of: matter which the animal cannot digest, such as bones; food material after all the nutrients have been extracted, for example cellulose or lignin; ingested matter which would be toxic if it remained in the digestive tract; and dead or excess gut bacteria and other endosymbionts. [ http://en.wikipedia.org/wiki/Anus http://zfin.org/curator ]
Synonyms: anal opening anal orifice opening of terminal part of digestive tract
Term information
- EV:0100082
- TGMA:0001279
- WBbt:0005364
- NCIT:C43362
- BTO:0001680
- Wikipedia:Anus
- GAID:312
- MA:0000331
- SCTID:181262009
- galen:Anus
- FMA:15711
- CALOHA:TS-2005
- TADS:0000066
uberon_slim, pheno_slim, human_reference_atlas
Term relations
- orifice
- ectoderm-derived structure
- develops from some proctodeum
- part of some digestive tract
- BSPO_0001108 some digestive tract