lecture 13

Question 1

this curves around the accessory nerve and ascends along the posterior border of the sternocleidomastoid

Answer 1

Lesser occipital nerve (C2)

Question 2

This is the largest ascending branch, It encircles the posterior border of the sternocleidomastoid, perforates the deep fascia and ascends on the muscle beneath the platysma with the external jugular vein

Answer 2

Greater auricular nerve C2 –C3

Question 3

It curves round the posterior border of the sternocleidomastoid near its midpoint and runs obliquely forwards, deep to the external jugular vein, to the anterior border of the muscle

Answer 3

Transverse cervical nerve C2-C3

Question 4

These arise by a common trunk and emerge from the posterior border of the sternocleidomastoid, to descend under the platysma and the deep cervical fascia; they divide into medial, intermediate and lateral (posterior) branches

Answer 4

Supraclavicular (anterior, middle and posterior) nerves. C3 – C4

Question 5

it has two roots.
It descends on the lateral side of the internal jugular vein, crosses it a little below the middle of the neck, and continues forwards to join the superior root anterior to the common carotid artery, forming the

Answer 5

Ansa cervicales (superior and inferior root)

Question 6

is the sole motor supply to the diaphragm, and also contains widespread sensory fibres.

Answer 6

Phrenic nerve (mixed) the most important nerve of the cervical plexus. Phrenic nerve (mixed) the most 
    important nerve of the cervical  
    plexus.