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Anatomy > Muscles Crossing The Elbow Joint > Flashcards

Muscles Crossing The Elbow Joint Flashcards

0
Q

Insertion of triceps brachii

A

By common tendon into olecranon process of ulna

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1
Q

Origin of triceps brachii

A

Long head: infraglenoid tubercle of scapula; lateral head: posterior shaft of humerus; medial head: posterior humeral shaft distal to radial groove

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2
Q

Action of triceps brachii

A

Powerful forearm extensor

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3
Q

Innervation of triceps brachii

A

Radial nerve

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4
Q

Origin of anconeus

A

Lateral epicondyle of humerus

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5
Q

Insertion of anconeus

A

Lateral aspect of olecranon process of ulna

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6
Q

Action of anconeus

A

Abducts ulna during forearm pronation; synergist of triceps brachii in elbow extension

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7
Q

Innervation of anconeus

A

Radial nerve

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8
Q

Origin of biceps brachii

A

Short head: coracoid process; long head: supraglenoid tubercle and lip of glenoid cavity; tendon of long head runs within capsule of shoulder joint and descends into inter tubercular sulcus of humerus

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9
Q

Insertion of biceps brachii

A

By common tendon into radial tuberosity

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10
Q

Action of biceps brachii

A

Flexes elbow joint and supinates forearm

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11
Q

Innervation of biceps brachii

A

Musculocutaneous nerve

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12
Q

Origin of brachialis

A

Anterior surface of distal humerus; embraces insertion of deltoid muscle

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13
Q

Insertion of brachialis

A

Coronoid process of ulna and capsule of elbow joint

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14
Q

Action of brachialis

A

A major forearm flexor

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15
Q

Innervation of brachialis

A

Musculocutaneous nerve

16
Q

Origin of brachioradialis

A

Lateral supracondylar ridge at distal end of humerus

17
Q

Insertion of brachioradialis

A

Base of styloid process of radius

18
Q

Action of brachioradialis

A

Synergist in forearm Flexion

19
Q

Innervation of brachioradialis

A

Radial nerve

Anatomy (13 decks)

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