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Upper Limb > Muscles of Arm > Flashcards

Muscles of Arm Flashcards

1
Q

Origin of Biceps Brachii

A

Long Head
Supraglenoid Tubercle of Scapula

Short Head
Coracoid Process of Scapula

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2
Q

Insertion of Biceps Brachii

A

Radial Tuberosity via Bicipital Aponeurosis

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3
Q

Innervation of Biceps Brachii

A

Musculocutaaneous Nerve

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4
Q

Action of Biceps Brachii

A

When supine
Flexes forearm

When Pronated
Supinates forearm

Short Head resists dislocation of shoulder

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5
Q

Origin of Coracobrachialis

A

Tip of coracoid process of scapula

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6
Q

Insertion of coracobrachialis

A

Middle third of medial surface of humerus

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7
Q

Innervation of coracobrachialis

A

Musculocutaneous Nerve

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8
Q

Action of coracobrachialis

A

Helps flex arm
Helps adduct arm
Prevents dislocation of shoulder

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9
Q

Origin of Brachialis

A

Distal half of anterior surface of Humerus

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10
Q

Insertion of Brachialis

A

Coronoid Process of Ulna

Tuberosity of Ulna

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11
Q

Innervation of Brachialis

A

Musculocutaneous Nerve

Radial Nerve

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12
Q

Action of Brachialis

A

Flexes forearm in all positions

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13
Q

Origin of anconeus

A

Lateral epicondyle of humerus

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14
Q

Insertion of anconeus

A

Lateral surface of olecranon

Superior posterior part of Ulna

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15
Q

Innervation of Anconeus

A

Radial Nerve

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16
Q

Action of Anoneus

A

Helps triceps with extension of forearm
Stabilizes elbow joint
May help adduct when forearm is pronated

17
Q

Origin of Triceps Brachii

A

Long Head
Infraglenoid Tubercle of Scapula

Lateral Head
Posterior surface of humerus above Radial Groove

Medial Head
Posterior surface of humerus below Radial Groove

18
Q

Insertion of triceps brachii

A

Proximal end of Olecranon of Ulna

19
Q

Innervation of Triceps Brachii

A

Radial Nerve

20
Q

Action of triceps brachii

A

main extensor of forearm

Long head resists dislocation of Humerus especially during adduction

Upper Limb (10 decks)

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