Anterolateral Neck Muscles

Question 1

Sternocleidomastoid

Answer 1

Deep to platysma (2 headed) on anterolateral surface of neck; fleshy parts on either side of neck delineate limits of anterior and posterior triangles; key muscular landmark in neck; spasms of one of these muscles may cause torticollis.

Question 2

Scalenes

Answer 2

Located more laterally than anteriorly on neck; deep to platysma and sternocleidomastoid.

Elevate first two ribs (aid in inspiration); flex and rotate.