Cervical Plexus

Question 1

Formation

Answer 1

Anterior rami of upper 4 cervical nerves

Question 2

Position

Answer 2

Opposite upper 4 cervical vertebrae covered by sternomastoid and IJV

Question 3

Branches

Answer 3

1. Communicating
2. Cutaneous
3. Muscular

Question 4

Communicating

Answer 4

Branches with last 3 cranial nerves

Question 5

Cutaneous

Answer 5

1. Great auricular
2. Lesser occipital
3. Transverse cutaneous nerve neck
4. Supraclavicular

Question 6

Lateral group

Answer 6

1. Sternomastoid
2. Trapezius
3. Levator scapulae
4. Scalenus medius

Question 7

Medial group

Answer 7

1. Longus colli And capitis
2. Rectus capitis anterior and lateralis

Question 8

Descended cervicalis

Answer 8

Inferior root ansa cervicalis
Supplies:
Infrahyoid muscles except thyrohyoid

Question 9

Phrenic nerve

Answer 9

C3,4,5
Descends on scalenus anterior
Supply diaphragm

Question 10

Muscular

Answer 10

1. Lateral group
2. Medial group
3. Descendes cervicalis
4. Phrenic nerve