Nerve Routes

Question 0

Lesser occipital nerve (C2,C3)

Answer 0

Supplies the skin of the neck and scalp posterosuperior to the auricle

Question 1

Spinal accessory nerve (CN XI)

Answer 1

Passes deep to the SCM before entering the lateral cervical region at or inferior to the junction of the superior and middle thirds of the posterior border of the SCM

Question 2

Greater auricular nerve (C2,C3)

Answer 2

Ascends vertically across the SCM onto the parotid gland, where it divides and supplies skin over the gland, posterior aspect of the auricle, and the area of skin extending from the angle of the mandible to the mastoid process

Question 3

Transverse cervical nerve (C2,C3)

Answer 3

Supplies the skin covering the anterior cervical region - nerve curves around the middle of the posterior border of the SCM and passes anteriorly and horizontally across it deep to the EJV and platysma

Question 4

Phrenic nerve (C3,C4,C5)

Answer 4

Lies anterior on the anterior scalene muscles and crosses anterior to the second part of the subclavian artery

Question 5

External jugular vein

Answer 5

Begins near the angle of the mandible by the union of the posterior division of the retromandibular vein with the posterior auricular vein

Question 6

Suprascapular artery

Answer 6

Passes inferolaterally across the anterior scalene muscle and phrenic nerve and crosses the subclavian artery and the cords of the brachial plexus

Question 7

Supraclavicular nerve (C3,C4)

Answer 7

Emerges as a common trunk under cover of the SCM and send small branches to the skin of the neck cross the clavicle to supply the skin over the shoulder

Question 8

Transverse cervical artery

Answer 8

Supplies the trapezius and is oriented in the posterior cervical triangle

Question 9

Dorsal scapular artery

Answer 9

Supplies the rhomboids and levator scapulae

Question 10

Dorsal scapular bundle

Answer 10

Dorsal scapular vein, artery, and nerve - Supplies the rhomboids and levator scapulae