Dissecion 2: Axilla and Brachial Plexus Flashcards

1
Q

Which muscle makes up the anterior wall of the axilla

A

pectoralis major

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2
Q

What is the main muscle of the posterior wall of the axilla

A

latissimus dorsi (teres major also contributes)

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3
Q

Where does the axillary vein become the subclavian

A

at the lateral border of rib 1

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4
Q

Where is the axillary vein renamed the brachial vein

A

at the lower border of teres major

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5
Q

What forms the brachial plexus

A

the anterior rami of spinal nerves C5-T1

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6
Q

From proximal to distal what does the brachial plexus consist of

A
Roots
Trunks
Divisions
Cords
Branches (named nerves)

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7
Q

What muscles are supplies by the musculocutaneous nerve

A

coracobrachialis, biceps brachii and brachialis (anterior compartment)

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8
Q

Which compartment contains the axillary and radial nerves

A

posterior compartment of the arm

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9
Q

In what injury is the axillary nerve vunerable

A

shoulder dislocation or fractured neck of humerous

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10
Q

When could the radial nerve be damages

A

mid shaft humeorus fracture

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11
Q

Where does the ulner nerve enter the arm

A

it is the most medial of the brachial plexus and passes posteriolory into the medial aspect of the arm

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12
Q

What does the median nerve form

A

the ‘M’ shape configuration of the named nerves in the axilla

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