Unit 4: Upper Extremity Muscles (Forearm) Flashcards

1
Q

Action:
-Extend the elbow
Origin:
-Lateral epicondyle of the humerus
Insertion:
-Olecranon process and posterior, proximal surface of ulna

A

anconeus

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2
Q

Action:
-Flex the elbow
Origin:
-Distal half of anterior surface of humerus
Insertion:
-Tuberosity and coronoid process of ulna

A

brachialis

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3
Q

Action:
-Flex the elbow
Origin:
-Proximal two-thirds of the lateral supracondylar ridge of humerus
Insertion:
-Styloid process of radius

A

brachioradialis

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4
Q

Action:
-Pronate the forearm
Origin:
-Medial, anterior surface of distal ulna
Insertion:
-Lateral, anterior surface of distal radius

A

pronator quadratus

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5
Q

Action:
-Pronate the forearm
Origin:
-Common flexor tendon from medial epicondyle of humerus and coronoid process of the ulna
Insertion:
-Middle of lateral surface of the radius

A

pronator teres

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6
Q

Action:
-Supinate the forearm
Origin:
-Lateral epicondyle of humerus, radial collateral ligament, annular ligament, and supinator crest of the ulna
Insertion:
-Anterior, lateral surface of proximal one-third of radial shaft

A

supinator

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7
Q

Action:
-Abduct the thumb
-Extend the thumb
-Abduct the thumb
Origin:
-Posterior surface of radius and ulna, and interosseous membrane
Insertion:
-Base of first metacarpal

A

abductor pollicis longus

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8
Q

Action:
-Extend the wrist
-Abduct the wrist
Origin:
-Common extensor tendon from the lateral epicondyle of humerus
Insertion:
-Base of third metacarpal

A

extensor carpi radialis brevis

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9
Q

Action:
-Extend the wrist
-Abduct the wrist
Origin:
-Distal one-third of the lateral supracondylar ridge of humerus
Insertion:
-Base of second metacarpal

A

extensor carpi radialis longus

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10
Q

Action:
-Extend the wrist
-Adduct the wrist
Origin:
-Common extensor tendon from the lateral epicondyle of humerus
Insertion:
-Base of fifth metacarpal

A

extensor carpi ulnaris

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11
Q

Action:
-Extend the second through fifth fingers
Origin:
-Common extensor tendon from the lateral epicondyle of humerus
Insertion:
-Bases of middle and distal phalanges of second through fifth fingers

A

extensor digitorum

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12
Q

Action:
-Extend the second finger
-Adduct the second finger
Origin:
-Posterior surface of distal shaft of ulna and interosseous membrane
Insertion:
-Tendon of the extensor digitorum at the level of the second metacarpal

A

extensor indicis

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13
Q

Action:
-Extend the thumb
-Abduct the wrist
Origin:
-Posterior surface of radius and interosseous membrane
Insertion:
-Base of proximal phalanx of thumb

A

extensor pollicis brevis

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14
Q

Action:
-Extend the thumb
-Abduct the wrist
Origin:
-Posterior surface of ulna and interosseous membrane
Insertion:
-Base of distal phalanx of thumb

A

extensor pollicis longus

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15
Q

Action:
-Flex the wrist
-Abduct the wrist
Origin:
-Common flexor tendon from medial epicondyle of humerus
Insertion:
-Bases of second and third metacarpals

A

flexor carpi radialis

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16
Q

Action:
-Flex the wrist
-Adduct the wrist
Origin:
-Humeral head, common flexor tendon from medial epicondyle of humerus
-Ulnar head, posterior surface of proximal two-thirds of ulna
Insertion:
-Pisiform, hook of the hamate and base of fifth metacarpal

A

flexor carpi ulnaris

17
Q

Action:
-Flex the second through fifth fingers
Origin:
-Anterior and medial surfaces of proximal three-quarters of ulna
Insertion:
-Bases of distal phalanges, palmar surface of second through fifth fingers

A

flexor digitorum profundus

18
Q

Action:
-Flex the second through fifth fingers
-Flex the wrist
Origin:
-Common flexor tendon from medial epicondyle of humerus, ulnar collateral ligament, coronoid process of ulna, interosseous membrane and proximal shaft of radius
Insertion:
-Sides of middle phalanges of second through fifth fingers

A

flexor digitorum superficialis

19
Q

Action:
-Flex the thumb
Origin:
-Anterior surface of radius and interosseous membrane
Insertion:
-Base of distal phalanx of thumb

A

flexor pollicis longus

20
Q

Action:
-tense the palmar fascia
-Flex the wrist
Origin:
-Common flexor tendon from medial epicondyle of humerus
Insertion:
-Flexor retinaculum and palmar aponeurosis

A

palmaris longus