Week 6

Question 1

route of brachial plexus

Answer 1

formed of C5-T1
emerges between middle and anterior scalene with subclavian artery, NOT subclavian vein. posterior to SCM and clavicle. under clavicle, over 1st rib. with axillary artery (after lat border of 1st rib). into cervico axillary canal and axillary space. to medial arm.
the roots and trunks are superior to clavicle

Question 2

structures of the axilla

Answer 2

contains infraclavicular part of brachial plexus, axilla artery and vein, lymph nodes, fat and connective tissue

Question 3

phrenic nerve

Answer 3

C3-5. anterior to ant scalene, supplies diaphragm

Question 4

dorsal scap nerve

Answer 4

C4-5.
pierces middle scalene, runs deep to levator scap and rhomboids

Question 5

long thoracic nerve

Answer 5

C5-7
post to brachial plexus, down medial wall of axilla

Question 6

nerve to subclavius

Answer 6

C4-6
arises off upper trunk of brachial plexus, runs ant. to innervate subclavius

Question 7

suprascapular nerve

Answer 7

C4-6
arises from upper trunk. passes through suprascapular notch, around spinoglenoid notch

Question 8

lateral and medial pectoral nerves

Answer 8

lateral C5-7. medial C8-T1

Question 9

upper and lower subscapular nerves

Answer 9

C5-7

Question 10

thorocodorsal nerve

Answer 10

C6-8

Question 11

thoracic outlet syndrome

Answer 11

compression of neurovascular structures
neurological and vascular disorder