Cervical Plexus

Question 1

how is the cerival plexus formed

Answer 1

it is formed from the ventral rami C1 - 4

• loops attaching to one and other
• Overlies the middle scalene muscle, deep to SCM

Question 2

What does the lesser occipital nerve innervate? and is spinal level

Answer 2

it supplis the cutaneous skin of the posterior lateral neck and scalp.

arises from vertebral C2/3

Question 3

what is the function of the greater auricular nerve

Answer 3

supplies the skin over the angle of the mandible to the chin. arises from C2/3

Question 4

What is the function of the transverse cervical nerve

Answer 4

it supplies the skin of the anterior triangle

Question 5

what is the function of the supraclavicular nerve

Answer 5

supplies the skin over the anterolateral neck and shoulders

Question 6

what are the muscular branches of the cervical plexus

Answer 6

• hypoglossal nerve (Cn XII) supplies the hyoid muscles
• SCM - Accessory nerve (Cn XI) (C2/3)
• Traps - Accessory nerve (Cn XI) (C3/4)