Anus
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The anus (frae Laitin anus, meanin 'ring, anus', which is frae Proto-Indo-European *h₁eh₂no-, meanin "ring", "circle")[1][2] is an openin at the opposite end o an ainimal's digestive tract frae the mooth. Its function is tae control the expulsion o faeces, unwantit semi-solit matter produced during digestion. The human anus is the freemit openin o the rectum. Twa sphincters control the exit o faeces frae the bouk during an act o defecation, which is the primar function o the anus.
| Anus | |
|---|---|
 Formation o anus in proto- an deuterostomes | |
| Details | |
| Precursor | Proctodeum |
| System | Alimentary, sometimes reproductive |
| Artery | Inferior rectal artery |
| Vein | Inferior rectal vein |
| Nerve | Inferior rectal nerves |
| Lymph | Superficial inguinal lymph nodes |
| Identifiers | |
| Laitin | Anus |
| TA | A05.7.05.013 |
| Anatomical terminology | |
| Anus | |
|---|---|
 | |
| Identifiers | |
| TA | A05.7.05.013 |
| Anatomical terminology | |
References
eedit- ↑ Martim de Albuquerque (1873). Notes and Queries. Original from the University of Michigan: Oxford University Press. p. 119.
- ↑ Edward O'Reilly, John O'Donovan (1864). An Irish-English Dictionary. Original from Oxford University: J. Duffy. p. 7.