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Human Anatomy 2 > Muscles Of The Arm, Forearm, & Wrist (2) > Flashcards

Muscles Of The Arm, Forearm, & Wrist (2) Flashcards

1
Q

What is the origin of the short head of the biceps brachii?

A

Tip of coracoid process

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2
Q

What is the origin of the long head of the biceps brachii?

A

Supraglenoid tubercle of scapula

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3
Q

What is the attachment of the biceps brachii?

A

Tuberosity of radius

Fascia of forearm through bicipital aponeurosis

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4
Q

What is the function of the biceps brachii?

A

Supinates forearm

When supine flexes forearm

Resist dislocation of shoulder (short head)

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5
Q

What is the origin of the brachialis?

A

Distal 1/2 of anterior surface of humerus

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6
Q

What is the attachment of the brachialis?

A

Coronoid process

Tuberosity of ulna

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7
Q

What is the function of the brachialis?

A

Flexes forearm

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8
Q

What is the origin of the coracobrachialis?

A

Tip of coracoid process of scapula

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9
Q

What is the attachment of the coracobrachialis?

A

Middle 1/3 of medial surface of humerus

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10
Q

What is the function of the coracobrachialis?

A

Helps flex and Adduct arm

Resists dislocation of shoulder

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11
Q

What is the origin of the long head of the triceps brachii?

A

Infraglenoid tubercle of scapula

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12
Q

What is the origin of the lateral head of the triceps brachii?

A

Posterior surface of humerus (superior to radial groove)

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13
Q

What is the origin of the medial head of the triceps brachii?

A

Posterior surface of humerus (inferior to radial groove)

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14
Q

What is the attachment of the triceps brachii?

A

Proximal end of olecranon

Fascia of forearm

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15
Q

What is the function of the triceps brachii?

A

Chief extensor of forearm

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16
Q

What does the long head of the triceps brachii resist?

A

Dislocation of the humerus during adduction

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17
Q

What is the origin of the Anconeus?

A

Lateral epicondyle of humerus

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18
Q

What is the attachment of the anconeus?

A

Lateral surface of olecranon

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19
Q

What is the function of the anconeus?

A

Assists triceps in extending forearm

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20
Q

What is the origin of the ulnar head of the pronator teres?

A

Coronoid process

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21
Q

What is the origin of the humeral head of pronator teres?

A

Medial epicondyle of humerus

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22
Q

What is the attachment of the pronator teres?

A

Middle of convexity of lateral radius

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23
Q

What is the function of the pronator teres?

A

Pronates and flexes forearm

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24
Q

What is the origin of the flexor carpi radialis?

A

Medial epicondyle of humerus

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25
Q

What is the attachment of the flexor carpi radialis?

A

Base of 2nd metacarpal

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26
Q

What is the function of the flexor carpi radialis?

A

Flexes and abducts hand

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27
Q

What is the origin of the palmaris longus?

A

Medial epicondyle of humerus

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28
Q

What is the attachment of the palmaris longus?

A

Distal 1/2 of flexor retinaculum

Apex of palmar aponeurosis

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29
Q

What is the function of the palmaris longus?

A

Flexes hand

Tenses palmar aponeurosis

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30
Q

What is the origin of the humeral head of the flexor carpi ulnaris?

A

Medial epicondyle of the humerus

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31
Q

What is the origin of the ulnar head of the flexor carpi ulnaris?

A

Olecranon

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32
Q

What is the attachment of the flexor carpi ulnaris?

A

Pisiform

Hook of hamate

5th metacarpal

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33
Q

What is the function of the flexor carpi ulnaris?

A

Flexes and Adducts hand

34
Q

What is the origin of the humero-ulnar head of the flexor digitorum superficialis?

A

Medial epicondyle

35
Q

What is the origin of the radial head of the flexor digitorum superficialis?

A

Superior 1/2 of anterior border

36
Q

What is the attachment of the flexor digitorum superficialis?

A

Shafts of middle phalanges

37
Q

What is the function of the flexor digitorum superficialis?

A

Flexes middle phalanges at PIP of 2-5 digits

Flexes proximal phalanges at MCP joint 2-5 digits

38
Q

What is the origin of the flexor digitorum profundus?

A

Proximal 3/4 of medial and anterior surface of ulna

Interosseus membrane

39
Q

What is the attachment of the medial part of the flexor digitorum profundus?

A

Bases of distal phalanges of 4th and 5th digits

40
Q

What is the attachment of the lateral part of the flexor digitorum profundus?

A

Bases of distal phalanges of 2nd and 3rd digits

41
Q

What is the function of the medial part of the flexor digitorum profundus?

A

Flexes distal phalanges 4 and 5 at DIP

42
Q

What is the function of the lateral part of the flexor digitorum profundus?

A

Flexes distal phalanges 2 and 3 at DIP

43
Q

What is the origin of the flexor pollicis longus?

A

Anterior surface of radius

Adjacent interosseus membrane

44
Q

What is the attachment of the flexor pollicis longus?

A

Base of distal phalanx of thumb

45
Q

What is the function of the flexor pollicis longus?

A

Flexes phalanges of 1st digit

46
Q

What is the origin of the pronator quadratus?

A

Distal 1/4 of anterior ulna

47
Q

What is the attachment of the pronator quadratus?

A

Distal 1/4 of anterior radius

48
Q

What is the function of the pronator quadratus?

A

Pronates forearm

Deep fibers bind radius and ulna together

49
Q

What is the origin of the brachioradialis?

A

Proximal 2/3 of lateral Supra epicondylar ridge of humerus

50
Q

What is the attachment of the brachioradialis?

A

Lateral surface of distal radius (proximal to styloid process)

51
Q

What is the function of the brachioradialis?

A

Weak flexion of forearm

52
Q

What is the origin of the extensor carpi radialis longus?

A

Lateral Supra condylar ridge of humerus

53
Q

What is the attachment of the extensor carpi radialis longus?

A

Dorsal aspect of 2nd metacarpal base

54
Q

What is the function of the extensor carpi radialis longus?

A

Extends and abducts the hand

Active during fist clenching

55
Q

What is the origin of the extensor carpi radialis brevis?

A

Lateral epicondyle of the humerus

56
Q

What is the attachment of the extensor carpi radialis brevis?

A

Dorsal aspect of 3rd metacarpal base

57
Q

What is the function of the extensor carpi radialis brevis?

A

Extends and abducts the hand

Active during fist clenching

58
Q

What is the origin of the extensor digitorum?

A

Lateral epicondyle of the humerus

59
Q

What is the attachment of the extensor digitorum?

A

Extensor expansions of medial four digits

60
Q

What is the function of the extensor digitorum?

A

Extends medial 4 digits at MCP

61
Q

What is the origin of the extensor digiti minimi?

A

Lateral epicondyle of the humerus

62
Q

What is the attachment of the extensor digiti minimi?

A

Extensor expansion at the 5th digit

63
Q

What is the function of the extensor digiti minimi?

A

Extends the 5th digit at MCP

64
Q

What is the origin of the extensor carpi ulnaris?

A

Lateral epicondyle of humerus

65
Q

What is the attachment of the extensor carpi ulnaris?

A

Dorsal aspect of base of 5th metacarpal

66
Q

What is the function of the extensor carpi ulnaris?

A

Extends and Adducts hand

Active during fist clenching

67
Q

What is the origin of the supinator?

A

Lateral epicondyle of humerus

68
Q

What is the attachment of the supinator?

A

Lateral, posterior, and anterior surface of proximal 1/3 radius

69
Q

What is the function of the supinator?

A

Supinates forearm

70
Q

What is the origin of the abductor pollicis longus?

A

Posterior surface of proximal 1/2 of ulna, radius, and interosseus membrane

71
Q

What is the attachment of the abductor pollicis longus?

A

Base of 1st metacarpal

72
Q

What is the function of the abductor pollicis longus?

A

Abducts thumb

Extends thumb at CMC joint

73
Q

What is the origin of the extensor pollicis longus?

A

Posterior surface of middle third of ulna and interosseus membrane

74
Q

What is the attachment of the extensor pollicis longus?

A

Dorsal aspect distal phalanx of thumb

75
Q

What is the function of the extensor pollicis longus?

A

Extends distal phalanx of thumb at IP joint

76
Q

What is the origin of the extensor pollicis brevis?

A

Posterior surface of distal third of radius and interosseus membrane

77
Q

What is the attachment of the extensor pollicis brevis?

A

Dorsal aspect of proximal phalanx base of thumb

78
Q

What is the function of the extensor pollicis brevis?

A

Extends proximal phalanx of thumbs at MCP joint

79
Q

What is the origin of the extensor indicis?

A

Posterior surface of distal 3rd of ulna and interosseus membrane

80
Q

What is the attachment of the extensor indicis?

A

Extensor expansion of 2nd digit

81
Q

What is the function of the extensor indicis?

A

Extends 2nd digit

Helps extend hand at wrist

Human Anatomy 2 (20 decks)

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