Anterior Superficial Cervical Muscles

Question 1

Sternocleidomastoid
(origin)

Answer 1

sternum and medial 1/3 of clavicle

Question 2

Sternocleidomastoid
(insertion)

Answer 2

mastoid process of temporal bone

Question 3

Sternocleidomastoid
(action)

Answer 3

Both Muscles: flexion of head and neck
One Muscle: Lateral flexion (turns face to opposite side

Question 4

Sternocleidomastoid
(innervation)

Answer 4

Accessory nerve (motor); spinal nerves C2 and C3 (sensory)

Question 5

Anterior scalene
(origin)

Answer 5

transverse processes of C3-C6

Question 6

Anterior scalene
(insertion)

Answer 6

superior portion of 1st rib

Question 7

Anterior scalene
(action)

Answer 7

Fixation or elevation of first rib during inhalation. With rib fixed: lateral flexion of neck

Question 8

Anterior scalene
(innervation)

Answer 8

Anterior rami of cervical nerves at origin of muscles

Question 9

Medial scalene
(origin)

Answer 9

Transverse processes of lower 5 or 6 cervical vertebrae

Question 10

Medial scalene
(insertion)

Answer 10

first rib

Question 11

Medial scalene
(action)

Answer 11

Fixation or elevation of first rib during inhalation. With rib fixed: lateral flexion of neck

Question 12

Medial scalene
(innervation)

Answer 12

anterior rami of cervical spinal nerves at origin of muscle

Question 13

Posterior scalene
(origin)

Answer 13

transverse processes of C4-C6

Question 14

Posterior scalene
(insertion)

Answer 14

first rib sometimes second rib

Question 15

Posterior scalene
(action)

Answer 15

Fixation or elevation of second rib. With rib fixed: lateral flexion of neck

Question 16

Posterior scalene
(innervation)

Answer 16

anterior rami of cervical spinal nerves at origin of muscles