Cervical Muscles

Question 1

Origin of Sternocleidomastoid

Answer 1

Origin:

medial portion of the clavicle and the sternum’s superior and lateral surfaces

Question 2

Innervation of Sternocleidomastoid

Answer 2

Innervation:

11th (XI) cranial nerve or accessory nerve

Question 3

Insertion of Sternocleidomastoid

Answer 3

Insertion:

mastoid process of temporal bone

Question 4

Movement of Sternocleidomastoid

Answer 4

Movements:

tilts & rotates head and neck; flexing of neck; stabilize neck

Question 5

Origin of Trapezius

Answer 5

Origin:

external surface of the occipital bone & the posterior midline of the cervical and thoracic regions

Question 6

Innervation of Trapezius

Answer 6

Innervation:

11th (XI) cranial nerve or accessory nerve & 3rd and 4th cranial nerves

Question 7

Insertion of Trapezius

Answer 7

Insertion:

lateral 1/3 of the clavicle and parts of the scapula

Question 8

Movement of Trapezius

Answer 8

Movement:

lifts and rotates the shoulders; dorsal flexion of the head; twist head