Week 6 - brachial plexus - neck

Question 1

Where does the brachial plexus emerge from?

Answer 1

Between anterior and middle scalenes and posterior to SCM, posterior to clavicle

Question 2

Which artery also emerges with the brachial plexus? And which vein doesn’t run between the two?

Answer 2

Subclavian which turns into axillary after first rib, and subclavian vein

Question 3

Which fascia is the brachial plexus deep to?

Answer 3

Prevertebral fascia

Question 4

Label neck structures slide 12

Question 5

Cranial nerve 9 - spinal accessory

Originates from, supplies which muscles and is superficial to?

Answer 5

1. From above spinal cord
2. Supplies SCM
3. Supplies Upper Trapezius
4. Superficial to thick prevertebral fascia

Question 6

Brachial plexus pathway from spine

Answer 6

1. Between scalenes
2. With subclavian artery
3. Under clavicle
4. Over first rib
5. With axillary artery (after lat border 1st rib)
6. Cervico axillary canal
7. Axillary space
8. Medial arm