FMA definition : Subdivision of posterior triangle of neck, each instance of which is bounded by the
inferior border of the inferior belly of somee omohyoid muscle superiorly, the posterior
border of some sternocleidomastoid muscle anteriorly, and the superior border of some
clavicle inferiorly.;
Subdivision of posterior triangle of neck, each instance of which is bounded by the
inferior border of the inferior belly of somee omohyoid muscle superiorly, the posterior
border of some sternocleidomastoid muscle anteriorly, and the superior border of some
clavicle inferiorly.