Superficial and Lateral Cervical Muscles

Question 1

Sternocleidomastoid

Answer 1

sternal head: anterior manubrium;
clavicular head: medial surface of clavicle

lateral surface of mastoid process and lateral portion of superior nuchal line

complex: acting bilaterally, flexes cervical
vertebral column anteriorly or, when supine, raises head; acting unilaterally, tilts head towards ipsi- lateral shoulder and rotates head so that chin faces
the opposite side

Spinal XI and some fibers from C2 ventral
ramus

Question 2

Trapezius

Answer 2

spinous processes of T1-12 thoracic vertebrae & lig. nuchae, external occipital pro- tuberance & sup. nuchal line

lateral clavicle, acromion, and spine of scapula

bends head & neck postero-laterally/ scapular elevation and rotation

Spinal XI and C3 & 4 ventral rami