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*** Muscles *** > Forearm > Flashcards

Forearm Flashcards

1
Q

Anterior superficial muscles

A

Flexor carpi ulnaris
Palmaris longus
Flexor carpi radialis
Pronator teres

Originate from medial epicondyle of the humerus
Innervates by median nerve (except FCU = ulnar nerve)
Mainly act to flex forearm

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2
Q

Flexor carpi ulnaris

Origin

A

Long origin = ulna

Medial epicondyle of the humerus

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3
Q

Flexor carpi ulnaris

Insertion

A

Pisiform carpal bone

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4
Q

Flexor carpi ulnaris

Innervation

A

Ulnar nerve

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5
Q

Flexor carpi ulnaris

Function

A

Flexes and adducts at the wrist

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6
Q

Palmaris longus

Location

A

Directly above the median nerve at the wrist

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7
Q

Palmaris longus

Origin

A

Medial epicondyle of the humerus

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8
Q

Palmaris longus

Insertion

A

Flexor retinaculum

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9
Q

Palmaris longus

Innervation

A

Median nerve

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10
Q

Palmaris longus

Function

A

Flexes at the wrist

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11
Q

Flexor carpi radialis

Origin

A

Medial epicondyle of the humerus

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12
Q

Flexor carpi radialis

Insertion

A

Base of metacarpals II and III

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13
Q

Flexor carpi radialis

Innervation

A

Median nerve

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14
Q

Flexor carpi radialis

Function

A

Flexes and adducts at the wrist

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15
Q

Pronator teres

Location

A

Medial border of cubital fossa

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16
Q

Pronator teres

Origin

A

Coronoid process of the ulna

Medial epicondyle of the humerus

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17
Q

Pronator teres

Insertion

A

Mid shaft of the radius

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18
Q

Pronator teres

Innervation

A

Median nerve

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19
Q

Pronator teres

Function

A

Pronates the forearm

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20
Q

Anterior intermediate muscles

A

Flexor digitorum superficialis

Median nerve and ulnar artery pass between the 2 heads

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21
Q

Flexor digitorum superficialis

Origin

A

Medial epicondyle of humerus

Radius

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22
Q

Flexor digitorum superficialis

Insertion

A

Middle phalanges of the four fingers

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23
Q

Flexor digitorum superficialis

Innervation

A

Median nerve

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24
Q

Flexor digitorum superficialis

Function

A

Flexes:

  • IP joint
  • MTP joints
  • Wrist
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25
Q

Anterior deep muscles

A

Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus

Innervated by median nerve (except for medial 1/2 of flexor digitorum profundus

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26
Q

Flexor digitorum profundus

Origin

A

Ulna

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27
Q

Flexor digitorum profundus

Insertion

A

Distal phalanges of the four fingers

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28
Q

Flexor digitorum profundus

Innervation

A

Medial 1/2 = ulna nerve

Lateral 1/2 = median nerve (anterior interosseous branch)

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29
Q

Flexor digitorum profundus

Function

A

Flexes distal IP joints and the wrist

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30
Q

Flexor pollicis longus

Origin

A

Anterior surface of the radius

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31
Q

Flexor pollicis longus

Insertion

A

Base of the distal phalanx of the thumb

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32
Q

Flexor pollicis longus

Innervation

A

Median nerve (anterior interosseous branch)

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33
Q

Flexor pollicis longus

Function

A

Flexes IP and MTP joints of the thumb

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34
Q

Pronator quadratus

Origin

A

Anterior surface of the ulna

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35
Q

Pronator quadratus

Insertion

A

Anterior surface of the radius

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36
Q

Pronator quadratus

Innervation

A

Median nerve (anterior interosseous branch)

37
Q

Pronator quadratus

Function

A

Pronates the forearm

38
Q

Posterior superficial muscles

A 
Brachioradialis
Extensor carpi radialis longus/brevis
Extensor digitorum
Extensor digiti minimi 
Extensor carpi ulnaris
Anconeus

All innervated by the radial nerve
Act to extend the wrist and fingers (except for brachioradialis)

39
Q

Brachioradialis

Origin

A

Lateral supracondylar ridge of the humerus

40
Q

Brachioradialis

Insertion

A

Distal end of the radius

41
Q

Brachioradialis

Innervation

A

Radial nerve

42
Q

Brachioradialis

Function

A

Flexes at the elbow

43
Q

Extensor carpi radialis longus/brevis

Origin

A 
Longus = supracondylar ridge of humerus
Brevis = lateral epicondyle of humerus
44
Q

Extensor carpi radialis longus/brevis

Insertion

A

Metacarpal bones II/III

45
Q

Extensor carpi radialis longus/brevis

Innervation

A

Radial nerve

46
Q

Extensor carpi radialis longus/brevis

Function

A

Extends and abducts the wrist

47
Q

Extensor digitorum

Origin

A

Lateral epicondyle of the humerus

48
Q

Extensor digitorum

Insertion

A

Extensor hood of each finger

49
Q

Extensor digitorum

Innervation

A

Radial nerve (deep branch)

50
Q

Extensor digitorum

Function

A

Extension at IPJ and MTPJ

51
Q

Extensor digiti minimi

Origin

A

Lateral epicondyle of the humerus

52
Q

Extensor digiti minimi

Insertion

A

Extensor hood of little finger

53
Q

Extensor digiti minimi

Innervation

A

Radial nerve (deep branch)

54
Q

Extensor digiti minimi

Function

A

Extends little finger

55
Q

Extensor carpi ulnaris

Origin

A

Lateral epicondyle of the humerus

56
Q

Extensor carpi ulnaris

Insertion

A

Base of metacarpal V

57
Q

Extensor carpi ulnaris

Innervation

A

Radial nerve (deep branch)

58
Q

Extensor carpi ulnaris

Function

A

Extension and adduction of wrist

59
Q

Anconeus

Origin

A

Lateral epicondyle of the humerus

60
Q

Anconeus

Insertion

A

Posterior/lateral surfaces of olecranon (ulna)

61
Q

Anconeus

Innervation

A

Radial nerve

62
Q

Anconeus

Function

A

Extends and stab elbow

Abducts ulna during pronation

63
Q

Deep posterior muscles

A 
Supinator
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
Extensor indicis proprius

Act on the thumb and index finger (except for supinator)

64
Q

Supinator

Location

A

Floor of cubital fossa

65
Q

Supinator

Origin

A

Lateral epicondyle of the humerus

Posterior surface of ulna

66
Q

Supinator

Insertion

A

Posterior surface of radius

67
Q

Supinator

Innervation

A

Radial nerve (deep branch)

68
Q

Supinator

Function

A

Supinator forearm

69
Q

Abductor pollicis longus

Location

A

Lateral border of anatomical snuff box

70
Q

Abductor pollicis longus

Origin

A

Interosseous membrane between radius and ulna

71
Q

Abductor pollicis longus

Insertion

A

Lateral side of base of metacarpal I

72
Q

Abductor pollicis longus

Innervation

A

Radial nerve (posterior interosseous branch)

73
Q

Abductor pollicis longus

Function

A

Abducts the thumb

74
Q

Extensor pollicis brevis

Location

A

Lateral border of anatomical snuff box

75
Q

Extensor pollicis brevis

Origin

A

Posterior surface of radius + interosseous membrane

76
Q

Extensor pollicis brevis

Insertion

A

Base of proximal phalanx of the thumb

77
Q

Extensor pollicis brevis

Innervation

A

Radial nerve (posterior interosseous branch)

78
Q

Extensor pollicis brevis

Function

A

Extends IPJ and MTPJ of thumb

79
Q

Extensor pollicis longus

Location

A

Medial border of the anatomical snuffbox

80
Q

Extensor pollicis longus

Origin

A

Posterior surface of the ulna + interosseous membrane

81
Q

Extensor pollicis longus

Insertion

A

Distal phalanx of thumb

82
Q

Extensor pollicis longus

Innervation

A

Radial nerve (posterior interosseous branch)

83
Q

Extensor pollicis longus

Function

A

Extends at all joints in thumb (CMCJ/IPJ/MTPJ)

84
Q

Extensor indicis proprius

Location

A

Enable independence of index finger

85
Q

Extensor indicis proprius

Origin

A

Posterior surface of ulna + interosseous membrane

86
Q

Extensor indicis proprius

Insertion

A

Extensor hood of index finger

87
Q

Extensor indicis proprius

Innervation

A

Radial nerve (posterior interosseous branch)

88
Q

Extensor indicis proprius

Function

A

Extends index finger

*** Muscles *** (9 decks)

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