Anterior Triangle of Neck

Learning Objectives

After reading this post you will know

  • Boundaries and subdivisions of anterior triangle.
  • Contents of submental, muscular and carotid triangles
  • Infrahyoid and suprahyoid muscles.
  • Ansa cervicalis.
  • Contents of carotid triangle.
  • Clinical relevance of carotid triangle.


Boundaries of anterior triangle


subdivisions of anterior triangle o f neck



Boundaries and contents of submental triangle




boundaries and contents of muscular triangle



­­­­­­Boundaries of carotid triangle

Muscles forming floor of carotid triangle



contents of carotid triangle



contents of carotid triangle


Site where carotid pulse can be felt


Branches of external carotid artery


Ansa cervicalis

Infrahyoid and Suprahyoid muscles  

Suprahyoid and infrahyoid muscles
*Anterior belly of diagastric develops from 1st pharyngeal arch, therefore, supplied by branch of  mandibular nerve (nerve of 1st pharyngeal arch). Posterior belly is derived from 2nd pharyngeal arch  therefore supplied by facial nerve ( nerve of 2nd pharyngeal arch).


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