| Triangle of auscultation | |
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| Muscles connecting the upper extremity to the vertebral column. (Triangle of auscultation visible but not labeled.) | |
| Latin | trigonum auscultationis |
| Gray's | subject #121 434 |
The triangle of ausculation of the lungs is situated behind the scapula.
Boundaries
It has the following boundaries:
- Superiorly, by the Trapezius
- Inferiorly, by the Latissimus dorsi
- Laterally by the medial margin of the scapula
The floor is partly formed by the Rhomboideus major and parts of 6th and 7th ribs.
Function
The triangle of auscultation is a space on the back where the relatively thin musculature allows for respiratory sounds to be heard more clearly with a stethoscope.
To better expose the floor of the triangle, which is made up of the posterior thoracic wall in the 6th intercostal space, the patient is asked to fold their arms across their chest, medially rotating the scapulae, while bending forward at the trunk.
External links
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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 As such, some of the information contained within it may be outdated.
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