Arms and forearms Flashcards Preview

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Flashcards in Arms and forearms Deck (92):
1

Triceps Brachii
proximal attachment

infraglenoid tubercle
posterior surface of humeral shaft
poster surface of humerus

2

Triceps Brachii distal attachment

olceranon process of ulna via common tendon

3

Triceps brachii innervation

radial nerve (C6,C7,C8)

4

Triceps brachii action

chief extensor of forearm

5

Anconeous proximal attachment

lateral epicondyle of humerus

6

Anconeous distal attachment

lateral surface of olcranon
superior part of posterior surface of ulna

7

Anconeous innervation

radial nerve (C7-T1)

8

Anconeous action

assists triceps in extending forearm
stabilizes elbow joint

9

Ulnar Collateral Ligament

-connects humerus to ulna on medial side

10

Radial Collateral Ligament

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

11

Annular Ligament

attached at both ends to ulna and straps radius against ulna
-radius pivots around ulna
-ulna remains stable and cannot rotate on humerus

12

Function of ulnar collateral ligament

resist any movement going laterally

13

Function of Radial Collateral Ligament

resist medial movement of the arm

14

Supinator origin

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

15

Supinator attachment

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

16

Supinator action

supinates forearm (rotates radius to turn palm anteriorly)

17

Supinator innervation

deep branch of radial nerve (C5 and C6)

18

Pronator teres origin

medial epicondyle of humerus and coronoid process of ulna

19

Pronator teres attachment

middle of lateral suface of radius

20

Pronator teres action

pronates and flexes forearm

21

Pronator teres innervation

median nerve (C6, C7)

22

Pronator quadratus origin

distal 1/4 of anterior surface of una

23

Pronator quadratus attachment

distal 1/4 of anterior surface of radius

24

Pronator quadratus action

pronates forearm

25

Pronator quadratus innervation

anterior interosseous nerve from median nerve (C8 and T1)

26

Flexor carpi radialis origin

medial epicondyle of humerus

27

Flexor carpi radialis attachment

base of 2nd metacarpal

28

Flexor carpi radialis action

flexes and radial (at wrist)

29

Flexor carpi radialis innervation

median nerve (C6, C7)

30

Palmaris Longus origin

medial epicondyle of humerus

31

Palmaris Longus attachment

Distal half of flexor retinaculum and palmar aponeurosis

32

Palmaris Longus action

flexes hand (at wrist) and tightens palmar aponeurosis

33

Palmaris Longus innervation

median nerve (C7,C8)

34

Flexor carpi ulnaris origin

Humeral head; medial epicondyle of humerus

35

Flexor carpi ulnaris attachment

pisiform bone, hook of hamate and 5th metacarpal bone

36

Flexor carpi ulnaris action

flexes and ulnar flexion (at wrist)

37

Flexor carpi ulnaris innervation

ulnar nerve (C7, C8)

38

Flexor digitorum superficialis origin

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

39

Flexor digitorum superficialis attachment

bodies of middle phalanges of digits 2-5

40

Flexor digitorum superficialis action

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

Flexor digitorum superficialis innervation

median nerve (C7,C8,T1)

42

Flexor digitorum Profundus origin

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

43

Flexor digitorum Profundus attachment

Base of the distal phalanx of digits 2 - 5

44

Flexor digitorum Profundus action

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

45

Flexor digitorum Profundus innervation

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

46

Flexor pollicis longus origin

Anterior surface of radius and adjacent interosseous membrane

47

Flexor pollicis longus attachment

Base of distal phalanx of thumb

48

Flexor pollicis longus action

Flexes phalanges of 1st digit (thumb)

49

Flexor pollicis longus innervation

Anterior interosseous nerve from median nerve (C8 and T1)

50

Brachioradialis origin

Proximal 2/3 of lateral supracondyle ridge of humerus

51

Brachioradialis attachment

Lateral surface of distal end of radius

52

Brachioradialis action

flexes forearm

53

Brachioradialis innervation

radial nerve (C5,C6,C7)

54

Extensor carpi radialis brevis origin

lateral epicondlye of humerus

55

Extensor carpi radialis brevis attachment

base of 3rd metacarpal

56

Extensor carpi radialis brevis action

extend and abduct hand at wrist joint

57

Extensor carpi radialis brevis innervation

deep branch of radial nerve (C7,C8)

58

Extensor carpi radialis longus origin

Lateral supracondyle ridge of humerus

59

Extensor carpi radialis longus attachment

Base of 2nd metacarpal

60

Extensor carpi radialis longus innveration

radial nerve (C6,C7)

61

Extensor digitorum: All medial four origin

lateral epicondyle of humerus

62

Extensor digitorum: All medial four attachment

extensor expansions of medial four digits

63

Extensor digitorum: All medial four action

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

64

Extensor digitorum: All medial four innervation

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

65

Extensor carpi ulnaris origin

Lateral epicondyle of humerus and posterior border of ulna

66

Extensor carpi ulnaris attachment

Base of 5th metacarpal

67

Extensor carpi ulnaris action

Extends and adducts hand at wrist joint

68

Extensor carpi ulnaris innveration

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

69

Extensor digiti minimi origin

Lateral epicondyle of humerus

70

Extensor digiti minimi attachment

Extensor expansion of 5th digit

71

Extensor digiti minimi action

Extends 5th digit at metacarpophalangeal and interphalangeal joints

72

Extensor digiti minimi innervation

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

73

Extensor indices origin

Posterior surface of ulna and interosseous membrane

74

Extensor indices attachment

Extensor expansion of 2nd digit

75

Extensor indices action

Extends 2nd digit and helps to extend hand

76

Extensor indices innervation

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

77

Extensor pollicis brevis origin

Posterior surfaces of radius and interosseous membrane

78

Extensor pollicis brevis attachment

Base of proximal phalanx of thumb

79

Extensor pollicis brevis action

Extends proximal phalanx of thumb at carpometacarpal joint

80

Extensor pollicis brevis innveration

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

81

Extensor pollicis longus origin

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

82

Extensor pollicis longus attachment

Base of distal phalanx of thumb

83

Extensor pollicis longus action

Extends distal phalanx of thumb at carpometacarpal and interphalangeal joints

84

Extensor pollicis longus innveration

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

85

Bicep Brachii origin

-apex of coracoid
-supraglenoid tubercle (long head)

86

Biceps Brachii attachment

radial tuberosity

87

Biceps Brachii action

supinator of forearm
powerful flexor of elbow joint

88

Biceps Brachii innveration

Musculocutanous (C5,C6,C7)

89

Coracobrachialis origin

tip of coracoid

90

Coracobrachialis attachment

middle third of medial surface of humerus

91

Coracobrachialis action

-flexes arm
-adducts arm
-stabilizes GH joint

92

Coracobrachialis innveration

Musculocutanous (C5,C6,C7)