Posterior Neck

Question 1

SCM OIIA

Answer 1

Origin: Sternal head - manubrium, clavicular head - medial 1/3 of clavicle

Insertion: mastoid process

Innervation: accessory nerve

Action: unilaterally - flex the head and neck laterally, rotate head to opposite side; bilaterally - extend upper cervical and flex lower cervical

Question 2

Splenius capitis OIIA

Answer 2

Origin: spinous process of C7-T3 and ligamentum nuchae

Insertion: mastoid process

Innervation: posterior rami middle (C1-C6)

Action: ipsilateral rotation of heat; extension and lateral flexion of spine and head

Question 3

Posterior scalene OIIA

Answer 3

Origin: posterior tubercles of transverse processes of vertebrae C5-C7

Insertion: lateral surface of 2nd rib

Innervation: anterior rami of C6-C8

Action: elevation of 2nd rib and lateral flexion

Question 4

Middle scalene OIIA

Answer 4

Origin: posterior tubercles of transverse process of vertebrae C2-C7

Insertion: upper surface of 1st rib

Innervation: anterior rami of C3-C8

Action: elevation of rib 1

Question 5

Anterior scalene OIIA

Answer 5

Origin: anterior tubercles of transverse processes of vertebrae C3-C6

Insertion: scalene tubercle on the 1st rib

Innervation: anterior rami of C4-C6

Action: elevation of rib 1

Question 6

Posterior triangle boundaries

Answer 6

-anteriorly: posterior edge of SCM
-posteriorly: anterior edge of trap
-inferiorly (basally): middle 1/3 of clavicle
-superiorly (apically): occipital bone

Question 7

2 posterior triangles

Answer 7

-occipital
-omoclavicular or subclavian

Question 8

Where do the transverse cervical artery branches travel to

Answer 8

-superficial: deep surface of trap
-deep: deep surface of rhomboids

Question 9

Where does the suprascapular artery travel to

Answer 9

posterior surface of scapula

Question 10

Where does the 3rd part of subclavian a emerge? Where does it become axillary a?

Answer 10

between anterior and middle scalene
lateral border of rib I

Question 11

What are the branches of the thyrocervical trunk?

Answer 11

transverse cervical and suprascapular arteries

Question 12

What forms the cervical plexus?

Answer 12

anterior rami of cervical nerves C1 to C4

Question 13

What does the transverse cervical nerve supply? Nerve roots?

Answer 13

lateral and anterior part of neck
C2 and C3

Question 14

What does the supraclavicular nerve supply? Nerve roots?

Answer 14

skin over clavicle and shoulder
C3 and C4

Question 15

What does the lesser occipital nerve supply? Nerve root?

Answer 15

skin of neck and scalp posterior to the ears
C2

Question 16

What does the greater auricular nerve supply? Nerve roots?

Answer 16

skin of parotid region, ears, and mastoid area
C2 and C3

Question 17

What does the phrenic nerve supply? Nerve roots?

Answer 17

diaphragm
C3 and C4

Question 18

What are the nerves in the cervical plexus? Which are sensory and B?

Answer 18

-transverse cervical (S)
-supraclavicular (S)
-lesser occipital (S)
-great auricular (S)
-phrenic (B)