Forearm Muscles Flashcards

1
Q

Action of Brachioradialis

A

Flexes forearm, returns forearm to neutral from a pronated or supinated position

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1
Q

Action of Extensor Carpi Radialis Brevis

A

Extend and abduct hand at wrist joint

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1
Q

Action of Abductor Pollicis Longus

A

Abducts thumb and extends it at first carpometacarpal joint

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2
Q

Action of Extensor Carpi Radialis Longus

A

Extend and abduct hand at wrist joint

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2
Q

Action of Extensor Carpi Ulnaris

A

Extends and adducts hand at wrist joint

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3
Q

Action of Extensor Digiti Minimi

A

Extends 5th digits at metacarpophalangeal joint and interphalangeal joint

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4
Q

Action of Extensor Digitorum

A

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

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5
Q

Action of Extensor Pollicis Brevis

A

Extends proximal phalanx of thumb at carpometacarpal joint

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5
Q

Action of Extensor Pollicis Longus

A

Extends distal phalanx of thumb at the metacarpophalangeal and interphalangeal joints

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5
Q

Action of Extensor Indicis

A

Extends 2nd digit and helps to extend hand

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5
Q

Action of Flexor Carpi Radialis

A

Flexes and abducts hand at wrist joint

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6
Q

Action of Flexor Carpi Ulnaris

A

Flexes and adducts hand at wrist joint

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7
Q

Action of Flexor Digitorum Profundus

A

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

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8
Q

Action of Flexor Digitorum Superficialis

A

Flexes middle phalanges at proximal interphalangeal joints of medial 4 digits; flexes proximal phalanges at metacarpophalangeal joints and hand

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9
Q

Action of Flexor Pollicis Longus

A

Flexes phalanges of 1st digit

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10
Q

Action of Palmaris Longus

A

Flexes hand at wrist joint and tightens palmar aponeurosis

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11
Q

Action of Pronator Quadratus

A

Pronates forearms; deep fibers bind radius and ulna together

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12
Q

Action of Supinator

A

Supinates forearm

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12
Q

Action of Pronator Teres

A

Pronates forearm and flexes elbow

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13
Q

Innervation of Abductor Pollicis Longus

A

Posterior Interosseous nerve (C7, C8)

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14
Q

Innervation of Brachioradialis

A

Radial nerve (C5, C6, C7)

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15
Q

Innervation of Extensor Carpi Radialis Brevis

A

Deep branch of radial nerve (C7, C8)

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17
Q

Innervation of Extensor Carpi Radialis Longus

A

Radial Nerve (C6, C7)

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18
Q

Innervation of Extensor Digiti Minimi

A

Posterior interosseous nerve (C7,C8)

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19
Q

Innervation of Extensor Digitorum

A

Posterior interosseous nerve (C7, C8)

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20
Q

Innervation of Extensor Pollicis Brevis

A

Posterior interosseous nerve (C7, C8)

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20
Q

Innervation of Extensor Pollicis Longus

A

Posterior interosseous nerve (C7, C8)

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20
Q

Innervation of Extensor Indicis

A

Posterior interosseous nerve (C7, C8)

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21
Q

Innervation of Flexor Carpi Radialis

A

Median nerve (C6, C7)

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22
Q

Innervation of Flexor Carpi Ulnaris

A

Ulnar Nerve (C7, C8)

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22
Q

Innervation of Flexor Digitorum Profundus

A

Ulnar Nerve and Median Nerve

23
Q

Innervation of Flexor Digitorum Superficialis

A

Median nerve (C7, C8, T1)

24
Q

Innervation of Flexor Pollicis Longus

A

Anterior interosseous nerve (C8, T1)

25
Q

Innervation of Palmaris Longus

A

Median nerve (C7, C8)

26
Q

Innervation of Pronator Quadratus

A

Anterior interosseous nerve (C8, T1)

27
Q

Innervation of Pronator Teres

A

Median nerve (C6, C7)

29
Q

Innervation of Supinator

A

Deep branch of radial nerve (C5, C6)

30
Q

Insertion of Abductor Pollicis Longus

A

Base of 1st metacarpal

32
Q

Insertion of Brachioradialis

A

Lateral surface of distal end of radius

33
Q

Insertion of Extensor Carpi Radialis Longus

A

Dorsal surface of base of 2nd metacarpal bone

33
Q

Insertion of Extensor Carpi Radialis Brevis

A

Dorsal surface of base of 3rd metacarpal bone

35
Q

Insertion of Extensor Digiti Minimi

A

Extensor expansion of 5th digit

35
Q

Insertion of Extensor Carpi Ulnaris

A

Dorsum of the base of 5th metacarpal bone

37
Q

Insertion of Extensor Digitorum

A

Extensor expansion of medial four digits

37
Q

Innervation of Extensor Carpi Ulnaris

A

Posterior interosseous nerve (C7, C8)

38
Q

Insertion of Extensor Indicis

A

Extensor expansion of 2nd digit

40
Q

Insertion of Extensor Pollicis Brevis

A

Base of proximal phalanx of thumb

41
Q

Insertion of Extensor Pollicis Longus

A

Base of distal phalanx of thumb

42
Q

Insertion of Flexor Carpi Radialis

A

Base of 2nd metacarpal bone

43
Q

Insertion of Flexor Carpi Ulnaris

A

Pisiform, hook of hamate, and 5th metacarpal

44
Q

Insertion of Flexor Digitorum Profundus

A

Base of distal phalanges of medial 4 digits

45
Q

Insertion of Flexor Digitorum Superficialis

A

Bodies of middle phalanges of medial 4 digits

46
Q

Insertion of Flexor Pollicis Longus

A

Base of distal phalanx of thumb

48
Q

Insertion of Pronator Quadratus

A

Distal 1/4 of anterior surface of radius

49
Q

Insertion of Pronator Teres

A

Middle of lateral surface of radius

50
Q

Insertion of Supinator

A

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

51
Q

Origin of Abductor Pollicis Longus

A

Posterior surfaces of ulna, radius, and interosseous membrane

53
Q

Origin of Brachioradialis

A

Distal 2/3 of lateral supracondylar ridge of humerus

54
Q

Origin of Extensor Carpi Radialis Brevis

A

Lateral epicondyle of humerus, radial collateral ligament

56
Q

Origin of Extensor Carpi Radialis Longus

A

Inferior 1/3 of lateral supracondylar ridge of humerus

58
Q

Origin of Extensor Carpi Ulnaris

A

Lateral Epicondyle of humerus and posterior border of middle ulna

59
Q

Origin of Extensor Digiti Minimi

A

Lateral epicondyle of humerus

61
Q

Origin of Extensor Digitorum

A

Lateral epicondyle of humerus

62
Q

Origin of Extensor Indicis

A

Posterior surface of ulna and interosseous membrane

64
Q

Origin of Extensor Pollicis Brevis

A

Posterior surfaces of radius, and interosseous membrane

65
Q

Origin of Extensor Pollicis Longus

A

Posterior surfaces of radius and interosseous membrane

65
Q

Insertion of Palmaris Longus

A

Distal 1/2 of flexor retinaculum and palmar aponeurosis

67
Q

Origin of Flexor Carpi Radialis

A

Medial epicondyle of humerus

68
Q

Origin of Flexor Carpi Ulnaris

A

Humeral head: medial epicondyle of humerus; Ulnar head: olecranon and posterior border of ulna

70
Q

Origin of Flexor Digitorum Profundus

A

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

71
Q

Origin of Flexor Digitorum Superficialis

A

Humeroulnar head: medial epicondyle of humerus, ulnar collateral ligament, and coronoid process of ulna,

Radial head: superior half of anterior border of radius

72
Q

Origin of Flexor Pollicis Longus

A

Anterior surface of radius and adjacent interosseous membrane

73
Q

Origin of Palmaris Longus

A

Medial epicondyle of humerus

74
Q

Origin of Pronator Quadratus

A

Distal 1/4 of anterior surface of ulna

75
Q

Origin of Pronator Teres

A

Medial epicondyle of humerus and coronoid process of ulna

76
Q

Origin of Supinator

A

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