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Anatomy > Arms and forearms > Flashcards

Arms and forearms Flashcards

1
Q

Triceps Brachii

proximal attachment

A

infraglenoid tubercle
posterior surface of humeral shaft
poster surface of humerus

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2
Q

Triceps Brachii distal attachment

A

olceranon process of ulna via common tendon

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3
Q

Triceps brachii innervation

A

radial nerve (C6,C7,C8)

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4
Q

Triceps brachii action

A

chief extensor of forearm

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5
Q

Anconeous proximal attachment

A

lateral epicondyle of humerus

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6
Q

Anconeous distal attachment

A

lateral surface of olcranon

superior part of posterior surface of ulna

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7
Q

Anconeous innervation

A

radial nerve (C7-T1)

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8
Q

Anconeous action

A

assists triceps in extending forearm

stabilizes elbow joint

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9
Q

Ulnar Collateral Ligament

A

-connects humerus to ulna on medial side

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10
Q

Radial Collateral Ligament

A

-connects humerus to annular ligament on lateral side where capitulum of humerus articulates with radiud

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11
Q

Annular Ligament

A

attached at both ends to ulna and straps radius against ulna

  • radius pivots around ulna
  • ulna remains stable and cannot rotate on humerus
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12
Q

Function of ulnar collateral ligament

A

resist any movement going laterally

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13
Q

Function of Radial Collateral Ligament

A

resist medial movement of the arm

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14
Q

Supinator origin

A

Lateral epicondyle of humerus, RCL and annular ligaments and supinator fossa and crest of ulna

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15
Q

Supinator attachment

A

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

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16
Q

Supinator action

A

supinates forearm (rotates radius to turn palm anteriorly)

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17
Q

Supinator innervation

A

deep branch of radial nerve (C5 and C6)

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18
Q

Pronator teres origin

A

medial epicondyle of humerus and coronoid process of ulna

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19
Q

Pronator teres attachment

A

middle of lateral suface of radius

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20
Q

Pronator teres action

A

pronates and flexes forearm

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21
Q

Pronator teres innervation

A

median nerve (C6, C7)

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22
Q

Pronator quadratus origin

A

distal 1/4 of anterior surface of una

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23
Q

Pronator quadratus attachment

A

distal 1/4 of anterior surface of radius

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24
Q

Pronator quadratus action

A

pronates forearm

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25
Q

Pronator quadratus innervation

A

anterior interosseous nerve from median nerve (C8 and T1)

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26
Q

Flexor carpi radialis origin

A

medial epicondyle of humerus

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27
Q

Flexor carpi radialis attachment

A

base of 2nd metacarpal

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28
Q

Flexor carpi radialis action

A

flexes and radial (at wrist)

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29
Q

Flexor carpi radialis innervation

A

median nerve (C6, C7)

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30
Q

Palmaris Longus origin

A

medial epicondyle of humerus

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31
Q

Palmaris Longus attachment

A

Distal half of flexor retinaculum and palmar aponeurosis

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32
Q

Palmaris Longus action

A

flexes hand (at wrist) and tightens palmar aponeurosis

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33
Q

Palmaris Longus innervation

A

median nerve (C7,C8)

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34
Q

Flexor carpi ulnaris origin

A

Humeral head; medial epicondyle of humerus

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35
Q

Flexor carpi ulnaris attachment

A

pisiform bone, hook of hamate and 5th metacarpal bone

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36
Q

Flexor carpi ulnaris action

A

flexes and ulnar flexion (at wrist)

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37
Q

Flexor carpi ulnaris innervation

A

ulnar nerve (C7, C8)

38
Q

Flexor digitorum superficialis origin

A

Humeroulnar head: medial epicondyle of humerus, ulnar collateral ligament, and coronoid process of ulna; Radial head: superior half of anterior border of radius

39
Q

Flexor digitorum superficialis attachment

A

bodies of middle phalanges of digits 2-5

40
Q

Flexor digitorum superficialis action

A

Flexes middle phalanges at proximal interphalangeal joints of medial four digits; acting more strongly, it also flexes proximal phalanges at metacarpophalangeal joints and hand

41
Q

Flexor digitorum superficialis innervation

A

median nerve (C7,C8,T1)

42
Q

Flexor digitorum Profundus origin

A

Proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane

43
Q

Flexor digitorum Profundus attachment

A

Base of the distal phalanx of digits 2 - 5

44
Q

Flexor digitorum Profundus action

A

Flexes distal phalanges at distal interphalangeal joints of medial four digits; assists with flexion of hand

45
Q

Flexor digitorum Profundus innervation

A

Medial part: ulnar nerve (C8 and T1); Lateral part: anterior interosseous branch of median nerve (C8 and T1) (C8, T1)

46
Q

Flexor pollicis longus origin

A

Anterior surface of radius and adjacent interosseous membrane

47
Q

Flexor pollicis longus attachment

A

Base of distal phalanx of thumb

48
Q

Flexor pollicis longus action

A

Flexes phalanges of 1st digit (thumb)

49
Q

Flexor pollicis longus innervation

A

Anterior interosseous nerve from median nerve (C8 and T1)

50
Q

Brachioradialis origin

A

Proximal 2/3 of lateral supracondyle ridge of humerus

51
Q

Brachioradialis attachment

A

Lateral surface of distal end of radius

52
Q

Brachioradialis action

A

flexes forearm

53
Q

Brachioradialis innervation

A

radial nerve (C5,C6,C7)

54
Q

Extensor carpi radialis brevis origin

A

lateral epicondlye of humerus

55
Q

Extensor carpi radialis brevis attachment

A

base of 3rd metacarpal

56
Q

Extensor carpi radialis brevis action

A

extend and abduct hand at wrist joint

57
Q

Extensor carpi radialis brevis innervation

A

deep branch of radial nerve (C7,C8)

58
Q

Extensor carpi radialis longus origin

A

Lateral supracondyle ridge of humerus

59
Q

Extensor carpi radialis longus attachment

A

Base of 2nd metacarpal

60
Q

Extensor carpi radialis longus innveration

A

radial nerve (C6,C7)

61
Q

Extensor digitorum: All medial four origin

A

lateral epicondyle of humerus

62
Q

Extensor digitorum: All medial four attachment

A

extensor expansions of medial four digits

63
Q

Extensor digitorum: All medial four action

A

Extends medial four digits at metacarpophalangeal joints; Extends hand at wrist joint

64
Q

Extensor digitorum: All medial four innervation

A

Posterior interosseous nerve (C7 and C8), the continuation of the deep branch of the radial nerve (C7, C8)

65
Q

Extensor carpi ulnaris origin

A

Lateral epicondyle of humerus and posterior border of ulna

66
Q

Extensor carpi ulnaris attachment

A

Base of 5th metacarpal

67
Q

Extensor carpi ulnaris action

A

Extends and adducts hand at wrist joint

68
Q

Extensor carpi ulnaris innveration

A

Posterior interosseous nerve (C7 and C8), the continuation of the deep branch of the radial nerve (C7, C8)

69
Q

Extensor digiti minimi origin

A

Lateral epicondyle of humerus

70
Q

Extensor digiti minimi attachment

A

Extensor expansion of 5th digit

71
Q

Extensor digiti minimi action

A

Extends 5th digit at metacarpophalangeal and interphalangeal joints

72
Q

Extensor digiti minimi innervation

A

Posterior interosseous nerve (C7 and C8), the continuation of the deep branch of the radial nerve (C7, C8)

73
Q

Extensor indices origin

A

Posterior surface of ulna and interosseous membrane

74
Q

Extensor indices attachment

A

Extensor expansion of 2nd digit

75
Q

Extensor indices action

A

Extends 2nd digit and helps to extend hand

76
Q

Extensor indices innervation

A

Posterior interosseous nerve (C7 and C8), the continuation of the deep branch of the radial nerve (C7, C8)

77
Q

Extensor pollicis brevis origin

A

Posterior surfaces of radius and interosseous membrane

78
Q

Extensor pollicis brevis attachment

A

Base of proximal phalanx of thumb

79
Q

Extensor pollicis brevis action

A

Extends proximal phalanx of thumb at carpometacarpal joint

80
Q

Extensor pollicis brevis innveration

A

Posterior interosseous nerve (C7 and C8), the continuation of the

81
Q

Extensor pollicis longus origin

A

Posterior surface of middle 1/3 of ulna and interosseous membrane

82
Q

Extensor pollicis longus attachment

A

Base of distal phalanx of thumb

83
Q

Extensor pollicis longus action

A

Extends distal phalanx of thumb at carpometacarpal and interphalangeal joints

84
Q

Extensor pollicis longus innveration

A

Posterior interosseous nerve (C7 and C8), the continuation of the deep branch of the radial nerve (C7, C8)

85
Q

Bicep Brachii origin

A
  • apex of coracoid

- supraglenoid tubercle (long head)

86
Q

Biceps Brachii attachment

A

radial tuberosity

87
Q

Biceps Brachii action

A

supinator of forearm

powerful flexor of elbow joint

88
Q

Biceps Brachii innveration

A

Musculocutanous (C5,C6,C7)

89
Q

Coracobrachialis origin

A

tip of coracoid

90
Q

Coracobrachialis attachment

A

middle third of medial surface of humerus

91
Q

Coracobrachialis action

A
  • flexes arm
  • adducts arm
  • stabilizes GH joint
92
Q

Coracobrachialis innveration

A

Musculocutanous (C5,C6,C7)

Anatomy (16 decks)

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