Anterior triangle

Anterior Triangle is a region of the human neck that is anatomically defined by the boundaries of several structures. The triangle is considered 'anterior' because it is towards the front of the body when in the standard anatomical position.

Boundaries

The boundaries of the anterior triangle are:

• Superior: The inferior border of the mandible
• Lateral: The anterior border of the sternocleidomastoid muscle
• Medial: The midline of the neck

Subdivisions

The anterior triangle is further subdivided into four smaller triangles:

• The submental triangle
• The submandibular triangle
• The carotid triangle
• The muscular triangle

Each of these subdivisions has its own unique set of structures and clinical significance.

Clinical Significance

The anterior triangle is of great clinical significance as it contains several vital structures including the carotid artery, jugular vein, and thyroid gland. Conditions such as carotid artery stenosis, thyroid disorders, and neck masses can be evaluated through examination of the anterior triangle.

See Also

• Posterior triangle of the neck
• Anatomy of the human neck
• Triangles of the neck

References

• Moore, K.L., Dalley, A.F. & Agur, A.M.R. (2013). Clinically Oriented Anatomy. 7th ed. Philadelphia: Lippincott Williams & Wilkins.
• Standring, S. (2008). Gray's Anatomy: The Anatomical Basis of Clinical Practice. 40th ed. London: Churchill Livingstone.