Lateral region of the neck Sup. border of mid. 1/3 of clavicle Lat region of neck Ant border of trapezius Post border of scm Occipital triangle and supraclavicular fossa digastric digastric(anterior belly) (posterior belly) submandibular triangle submental triangle occipital triangle carotid triangle (Called omohyoid trapezius omohyoid(superior belly) trapezius triangle) omohyoid (inferior belly) muscular triangle greater supraclavicular fossa (Called omohyoid clavicle triangle)Lateral region of the neck Lat.region of neck Sup.border of mid. 1/3 of clavicle Ant.border of trapezius Post.border of SCM Occipital triangle and supraclavicular fossa (Called omohyoid clavicle triangle) (Called omohyoid trapezius triangle)