Dissecion 2: Axilla and Brachial Plexus Flashcards
Which muscle makes up the anterior wall of the axilla
pectoralis major
What is the main muscle of the posterior wall of the axilla
latissimus dorsi (teres major also contributes)
Where does the axillary vein become the subclavian
at the lateral border of rib 1
Where is the axillary vein renamed the brachial vein
at the lower border of teres major
What forms the brachial plexus
the anterior rami of spinal nerves C5-T1
From proximal to distal what does the brachial plexus consist of
Roots Trunks Divisions Cords Branches (named nerves)
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What muscles are supplies by the musculocutaneous nerve
coracobrachialis, biceps brachii and brachialis (anterior compartment)
Which compartment contains the axillary and radial nerves
posterior compartment of the arm
In what injury is the axillary nerve vunerable
shoulder dislocation or fractured neck of humerous
When could the radial nerve be damages
mid shaft humeorus fracture
Where does the ulner nerve enter the arm
it is the most medial of the brachial plexus and passes posteriolory into the medial aspect of the arm
What does the median nerve form
the ‘M’ shape configuration of the named nerves in the axilla