Anterior triangle of the neck - AbsoluteAstronomy.com

Boundaries

The triangle is inverted with its apex inferior to its base which is under the chin.

	its apex Jugular notch in manubrium of the sternum	>- \| anteriorly Midline of the neck from chin to manubrium sterni		by the anterior margin of the Sternocleidomastoideus >- \|	its base (superiorly) by the lower border of the body of the mandible, and a line extending from the angle of the mandible to the mastoid process

Nerve supply

2 Bellies of Digastric

Anterior: Mylohyoid nerve
Mylohyoid nerve
The mylohyoid nerve is a nerve that innervates the mylohyoid muscle and the anterior belly of the digastric muscle.-Structure:...

Posterior: Facial nerve
Facial nerve
The facial nerve is the seventh of twelve paired cranial nerves. It emerges from the brainstem between the pons and the medulla, and controls the muscles of facial expression, and functions in the conveyance of taste sensations from the anterior two-thirds of the tongue and oral cavity...

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

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