Head and Neck

Question 0

What are the contents of the posterior triangle of the neck? Where are they in relation to the anterior scalene muscle?

Answer 0

Contents: subclavian vein, phrenic nerve, subclavian artery, and brachial plexus

Relationship: subclavian vein and phrenic nerve lie anterior to the anterior scalene muscle. The subclavian artery and brachial plexus are located posterior to the anterior scalene muscle

Question 1

The phrenic nerve arises from * *, travels * * to the anterior scalene muscle, * * to the subclavian vein, and provides motor innervation to the ipsilateral diaphragm.

Answer 1

1. C3-C5
2. Anterior
3. Posterior