Anterior triangle of the neck

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Anterior triangle of the neck
Anterior triangle
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.

Anatomy

• Muscles: Suprahyoid muscles and Infrahyoid muscles

Nerve supply

2 Bellies of Digastric

• Anterior: Mylohyoid nerve

• Posterior: Facial nerve

Development

• Anterior: 1st Pharyngeal arch

• Posterior: 2nd Pharyngeal arch

Divisions

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

• 

  Sternocleidomastoid muscle

• 

  Muscles of the neck. Anterior view.

• 

  The triangles of the neck. (Anterior triangles to the left; posterior triangles to the right. Suprahyoid labeled at left.)

See also

Posterior triangle of the neck

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 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 As such, some of the information contained within it may be outdated.