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Moore’s Clinical Anatomy > Arm Muscles > Flashcards

Arm Muscles Flashcards

1
Q
A
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2
Q

Proximal attachment of Biceps brachi

A

Short head-tip of coracoid process
Long head-supraglenoid tubercle

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3
Q

Distal attachment of biceps brachii


A

Tuberosity of radius
Facia of forearm(via bicipital aponeurosis)

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4
Q

Innervation of biceps brachii

A

Musculocutaneous nerve

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5
Q

Main action of biceps brachii

A

Supinates forearm and flexes when its supine
Short head prevents dislocation of shoulder

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6
Q

Proximal attachment of Coracobrachialis

A

Tip of coracoid process of scapula

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7
Q

Distal attachment of Coracobrachialis

A

Distal attachment of Coracobrachialis

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8
Q

Innervation of Coracobrachialis

A

Musculocutaneous nerve

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9
Q

Muscle action of Coracobrachialis

A

Helps flex and adduct arm; resists dislocation of shoulder

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10
Q

Proximal attachment of brachialis

A

Distal half of anterior surface of humerus

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11
Q

Distal attachment of brachialis

A

Coronoid process and tuberosity ulna

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12
Q

Innervation of brachialis

A

Musculocutaneous nerve and radial nerve

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13
Q

Muscle action of brachialis

A

Flexes forearm in all positions

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14
Q

Proximal attachment of Triceps brachii

A

Long head: infraglenoid tubercle of scapula
Lateral head: posterior surface of humerus, superior to radial groove
Medial head: posterior surface of humerus, inferior to radial groove


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15
Q

Distal attachment ofTriceps brachii

A

Proximal end of olecranon of ulna and fascia of forearm

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16
Q

Innervation of Triceps brachii

A

Radial nerve

17
Q

Muscle action of Triceps brachii

A

Chief extensor of forearm; long head resists dislocation of humerus; espe- cially important during adduction

18
Q

Proximal attachment of Anconeus

A

Lateral epicondyle of humerus

19
Q

Distal attachment of Anconeus

A

Lateral surface of olecranon and superior part of posterior surface of ulna

20
Q

Innervation of Anconeus

A

Radial nerve 



21
Q

Muscle action of Anconeus

A

Assists triceps in extending forearm; stabilizes elbow joint; may abduct ulna during pronation

Moore’s Clinical Anatomy (3 decks)

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