Lateral Cervical Triangle

Question 1

What are the nerves contained by the Lateral Cervical Triangle?

Answer 1

Cranial Nerve XI (accessory nerve), trunks of the brachial plexus, branches of the cervical plexus

Question 2

What are the veins contained by the Lateral Cervical Triangle?

Answer 2

External Jugular Vein, Part of Subclavian Vein (sometimes)

Question 3

What are the arteries contained by the Lateral Cervical Triangle?

Answer 3

subclavian artery, suprascapular artery

Question 4

What are the borders of the lateral cervical triangle?

Answer 4

Posterior edge of the clavicular head of the SCM, middle 1/3 of the clavicle, anterior edge of the Trapezius

Question 5

What is the roof of the lateral cervical triangle?

Answer 5

Investing layer of deep cervical fascia

Question 6

What is the floor of the lateral cervical triangle?

Answer 6

prevertebral layer of deep cervical fascia

Question 7

What are the three layers of the deep cervical fascia?

Answer 7

investing layer, prevertebral layer, pre tracheal

Question 8

What spinal nerve roots innervate the brachial plexus?

Answer 8

C5,C6,C7,C8,T1

Question 9

What spinal nerve roots innervate the phrenic nerve?

Answer 9

C3,C4,C5