Anal triangle
From Infogalactic: the planetary knowledge core
Anal triangle | |
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Muscles of the female perineum. (Anal triangle is roughly equal to bottom half of diagram.)
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Muscles of male perineum. (Anal triangle is roughly equal to bottom half of diagram.)
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Details | |
Latin | regio analis |
Identifiers | |
Dorlands /Elsevier |
12700160 |
TA | Lua error in Module:Wikidata at line 744: attempt to index field 'wikibase' (a nil value). |
TH | {{#property:P1694}} |
TE | {{#property:P1693}} |
FMA | {{#property:P1402}} |
Anatomical terminology
[[[d:Lua error in Module:Wikidata at line 863: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]]
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The anal triangle is the posterior part of the perineum. It contains the anal canal.
Structure
The anal triangle can be defined either by its vertices or its sides.
- Vertices
- one vertex at the coccyx bone
- the two ischial tuberosities of the pelvic bone
- Sides
- perineal membrane (posterior border of perineal membrane forms anterior border of anal triangle)
- the two sacrotuberous ligaments
Contents
Some components of the anal triangle include:[1]
- Ischioanal fossa
- Anococcygeal body
- Sacrotuberous ligament
- Sacrospinous ligament
- Pudendal nerve
- Internal pudendal artery and Internal pudendal vein
- Anal canal
- Muscles
Additional images
See also
References
- ↑ Daftary, Shirish; Chakravarti, Sudip (2011). Manual of Obstetrics, 3rd Edition. Elsevier. pp. 1-16. ISBN 9788131225561.
External links
- Anatomy photo:41:01-0202 at the SUNY Downstate Medical Center - "The Female Perineum: Boundaries of the Female Perineum"
- perineum at The Anatomy Lesson by Wesley Norman (Georgetown University) (perineumboundaries)