Anus
Appearance
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Anus | |
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![]() 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 | |
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![]() | |
Identifiers | |
TA | A05.7.05.013 |
Anatomical terminology |
![](http://upload.wikimedia.org/wikipedia/commons/thumb/0/05/Human_anus-en.svg/400px-Human_anus-en.svg.png)
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.
References
[eedit | eedit soorce]- ↑ 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.