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The anterior triangle is a region of the neck. Structure. The triangle is inverted with its apex inferior to its base which is under the chin. [1]
The triangles of the neck describe the divisions created by the major muscles in the region.. The side of the neck presents a somewhat quadrilateral outline, limited, above, by the lower border of the body of the mandible, and an imaginary line extending from the angle of the mandible to the mastoid process; below, by the upper border of the clavicle; in front, by the middle line of the neck ...
The carotid triangle (or superior carotid triangle) is a portion of the anterior triangle of the neck. Anatomy. Boundaries. It is bounded: ...
Anterior triangle is defined by the anterior border of the sternocleidomastoid muscle, inferior edge of the mandible and the midline of the neck. It contains the stylohyoid , digastric , mylohyoid , geniohyoid , omohyoid , sternohyoid , thyrohyoid and sternothyroid muscles .
It is a potential space, and is paired on either side, located on the superficial surface of the mylohyoid muscle between the anterior and posterior bellies of the digastric muscle. [1] The space corresponds to the anatomic region termed the submandibular triangle, part of the anterior triangle of the neck.
Anatomy figure: 25:01-03 at Human Anatomy Online, SUNY Downstate Medical Center - "Identification of the subdivsions of the anterior triangle and corresponding borders." Anatomy photo:25:19-0101 at the SUNY Downstate Medical Center - "Anterior Triangle of the Neck: The Submental Triangle"
Horizontal extent - From ligamentum nuchae when traced forward, the fascia splits and encloses trapezius, reunites and form roof of posterior triangle of neck; again splits and encloses sternocleidomastoid, reunites and forms the roof of anterior triangle.
Triangle of the vertebral artery is a region within the root of the neck and has following boundaries: [5] Medial border of anterior scalene muscle (lateral) Lateral border of longus colli muscle (medial) Carotid tubercle (apex) First part of subclavian artery (base)