Anterior triangle of the neck
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This article does not cite any references or sources. (October 2011) |
| Anterior triangle of the neck | |
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| Anterior triangle | |
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| Side of neck, showing chief surface markings. (Nerves are yellow, arteries are red.) | |
| Gray's | subject #145 563 |
The anterior triangle is a region of the neck.
Boundaries
The triangle is inverted with its apex inferior to its base which is under the chin.
| Inferior boundary (apex) | Jugular notch in the manubrium of the sternum |
| Anterior boundary | Midline of the neck from chin to the jugular notch |
| Posterior boundary | The anterior margin of Sternocleidomastoideus |
| Superior boundary (base) | The lower border of the body of the mandible, and a line extending from the angle of the mandible to the mastoid process |
Investing fascia covers the roof of the triangle while visceral fascia covers the floor.
Anatomy
Muscles:
- Suprahyoid muscles - Digastric (Ant and Post Belly) and Stylohyoid.
- Infrahyoid muscles - Omohyoid, Sternohyoid, Sternothyroid, and Thyrohyoid.
Nerve supply
↑Jump back a sectionDivisions
This space is subdivided into four smaller triangles by the Digastricus above, and the superior belly of the Omohyoideus.
These smaller triangles are named:
- the muscular triangle
- the carotid triangle
- the submandibular triangle
- the submental triangle
Additional images
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Muscles of the neck. Anterior view.
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The triangles of the neck. (Anterior triangles to the left; posterior triangles to the right. Suprahyoid labeled at left.)
External links
- lesson5 at The Anatomy Lesson by Wesley Norman (Georgetown University) (necktriangle)
- lesson6 at The Anatomy Lesson by Wesley Norman (Georgetown University)
This article incorporates text from a public domain edition of Gray's Anatomy.
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