FMA definition : Subdivision of anterior triangle of neck, each instance of which is bounded by the
inferior border of some posterior belly of digastric muscle superiorly, the posterosuperior
border of the superior belly of some omohyoid muscle inferiorly, and the anterior
border of some sternocleidomastoid muscle posteriorly; contains segments of some common
carotid artery, some internal jugular vein and some vagus nerve and some lymph nodes.;
Subdivision of anterior triangle of neck, each instance of which is bounded by the
inferior border of some posterior belly of digastric muscle superiorly, the posterosuperior
border of the superior belly of some omohyoid muscle inferiorly, and the anterior
border of some sternocleidomastoid muscle posteriorly; contains segments of some common
carotid artery, some internal jugular vein and some vagus nerve and some lymph nodes.