UL: Arm Flashcards

1
Q

Muscles innervated by radial nerve

A

BEST
Brachiradialis

Extensors

Supenator

Triceps

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2
Q

Anterior view of distal humerus

A

Note difference between condyle and epicondyle

Capitulum- radius

Trochlea- ulna

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3
Q

Posterior view of distal humerus

A
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4
Q

Proximal radius parts

A
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5
Q

Proximal ulna parts

A
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6
Q

Muscles of anterior compartment of the arm

A

Coracobrachialis

Biceps brachii

Brachialis

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7
Q

Origin and insertion of coracobrachialis

A

coracoid process to medial humerus

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8
Q

Origin and insertion of biceps brachii

A

Long head: supraglenoid tubercle. Short head: apex of coracoid process

To radial tuberosity

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9
Q

Origin and insertion of brachialis

A

Anterior humerus to tuberosity of ulna

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10
Q

Innervation of arm anterior compartment

A

musculocutaneous

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11
Q

Action of coracobrachialis

A

Shoulder flexion

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12
Q

Action of biceps brachi

A

Elbow flexion

Supination

(shoulder flexion)

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13
Q

Action of brachialis

A

Elbow flexion

Assists pronation

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14
Q

Origin and insertion of triceps brachii

A

Long head- infraglenoid tubercle

Medial head- posterior humerus

Lateral head- posterior humerus

to olecranon

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15
Q

Triceps innervation

A

Radial nerve

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16
Q

Action of triceps

A

Elbow extension

Shoulder adduction and extension

17
Q

Brachial artery branches

A
18
Q

Veins of arm

A
19
Q

Nerves of anterior arm

A
20
Q

Nerves of posterior arm

A
21
Q

Borders of anterior cubital fossa

A

Pronator teras

Inter epicondylar line

Brachioradialis

22
Q

Floor of ACF

A

Brachialis

Supinators

23
Q

Ligaments of elbow

A
24
Q

Relations of nerves and arteries in ACF

A

Medial to lateral:

median nerve, brachial artery, biceps, radial nerve

25
Q

Cubital tunnel

A

Ulnar nerve enters the forearm through this

Wrapped between the two heads of flexor carpi ulnaris

Ulnar nerve could get trapped and require release

2nd most common cause of entrapped nerve in upper limb (after carpal tunnel)

26
Q

Borders of cubital tunnel

A

Medial: Medial epicondyle

Lateral/posterior: olecranon

(insertions of 2 heads flexor carpi ulnaris)

Roof: cubital tunnel retinaculum

floor: capsule of elbow joint

27
Q

Roof of ACF

A

Apponeurosis of biceps brachii