Week 6 - brachial plexus - axillary

Question 1

Anterior wall of axilla

Answer 1

Pec major, pec minor

Question 2

Medial wall of axilla

Answer 2

Serratus anterior, 4th rib

Question 3

Posterior wall of axilla

Answer 3

Humerus, teres major, lats, subscap, scapula

Question 4

Order of brachial plexus from roots to branches

Answer 4

Roots, trunks, divisions, cords, branches

Question 5

Which spinal nerves make up the brachial plexus

Answer 5

C5-T1

Question 6

Which spinal nerves make up the trunks?

Answer 6

C5/C6 upper trunk
C7 middle trunk
C8/T1 lower trunk

Question 7

Mnemonic for brachial plexus sequence

Answer 7

Roots, Trunks, Divisions, Cords, Branches

Real Therapists Drink Cold Beer

Question 8

Branches of nerves from roots of BP

Answer 8

Phrenic nerve C3,4,5 (diaphragm)
Dorsal scapular C4,5 (lev scap, rhomb major, minor)
Long thoracic C5,6,7 (serratus ant)

Question 9

Nerves to scaleni & longus colli

Which spinal nerves and where do they arise from?

Answer 9

Longus colli - C2-6
Scaleni - C3-8

Arise close to exit of spinal nerves from the intervertebral foremen

Question 10

Slide 29 courses of nerves activity

Question 11

Course of phrenic, dorsal scapular, long thoracic

Answer 11

Phrenic - anterior to anterior scalene
Dorsal - pierces middle scalene and runs posterior to levator scap and rhomboids
Long thoracic - Posterior to brachial plexus, down medial wall of axilla

Question 12

Branches that come from the trunks of BP

Answer 12

Subclavian N. (upper trunk) & suprascapular N. (upper trunk)

Question 13

What does suprascapular nerve supply? and which notch does it pass through?

Answer 13

Infraspinatus, supraspinatus

Suprascapular notch on superior side of scapular