Anterior triangle of the neck

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Anterior triangle of the neck
Copy of Musculi coli base, my edits for tringles, labeled trianglesanteriorT.svg
Anterior triangle
Gray1210.png
Side of neck, showing chief surface markings. (Nerves are yellow, arteries are red.)
Identifiers
Gray's p.563
Anatomical terminology

The anterior triangle is a region of the neck.

Structure[edit]

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[edit]

Muscles:

Nerve supply[edit]

2 Bellies of Digastric

Development[edit]

Divisions[edit]

This space is subdivided into four smaller triangles by the Digastricus above, and the superior belly of the Omohyoideus.

These smaller triangles are named:

Additional images[edit]

See also[edit]

References[edit]

This article incorporates text from a public domain edition of Gray's Anatomy.

External links[edit]

  • lesson5 at The Anatomy Lesson by Wesley Norman (Georgetown University) (necktriangle)
  • lesson6 at The Anatomy Lesson by Wesley Norman (Georgetown University)