Head/Neck

Question 1

name the origin and the insertion of the Sternocleidomastoid (SCM)

Answer 1

origin: top of the manubrium, medial 1/3 of the clavicle

insertion: mastoid process, lateral portion superior nuchal line of the occiput

Question 2

Name the action of the Sternocleidomastoid (SCM)

Answer 2

unilaterally:
- laterally flex head/ neck to the same side
- rotate head/neck same side
Bilaterally:
- flex the neck
- assist to elevate the rib cage during inhalation

Question 3

Name the nerve of the SCM

Answer 3

Spinal accessory (XI) nerve , C2, 3

Question 4

Origin & Insertion of the Anterior Scalenes

Answer 4

Origin: TVPS 3-6 cervial vertabrae
Insertion: 1st rib

Question 5

Name the actions of all the scalenes

Answer 5

Unilaterally:
- laterally flex head/neck same side
- rotate head/neck to opposite side
Bilaterally:
- elevates the ribs during inhalation
and ….
only anterior scalenes
bilaterally : flex the head/neck

Question 6

Name the nerves of all the scalenes

Answer 6

C(3), 4-8

Question 7

Origin & Insertion of the Middle Scalenes

Answer 7

Origin: TVPS 2-7th cervical vertebrae
Insertion : 1st rib

Question 8

Origin & Insertion of the Posterior Scalene

Answer 8

Origin: TVPS 6-7th
Insertion : 2nd rib