Lumbar triangle
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| Lumbar triangle | |
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| Muscles connecting the upper extremity to the vertebral column. (Lumbar triangle labeled at bottom left.) | |
| Latin | trigonum lumbale inferius |
| Gray's | subject #121 434 |
| Dorlands/Elsevier | t_19/12823505 |
The lateral margin of the Latissimus dorsi is separated below from the Obliquus externus abdominis by a small triangular interval, the lumbar triangle of Petit, the base of which is formed by the iliac crest, and its floor by the Obliquus internus abdominis.
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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
Thorax: Mediastinum (Superior, Anterior, Middle, Posterior) - Superior thoracic aperture - Inferior thoracic aperture - Triangle of auscultation - Intercostal space
Thoracic diaphragm: Caval opening - Esophageal hiatus - Aortic hiatus - Central tendon
Abdomen: McBurney's point - Lumbar triangle
Perineum: Urogenital triangle - Anal triangle - Superficial perineal pouch - Perineal membrane - Deep perineal pouch - Urogenital diaphragm - Superior fascia of the urogenital diaphragm - Ischiorectal fossa - Pudendal canal
