Muscles of Upper Limb Flashcards Preview

Musculoskeletal (MEDI) 203 > Muscles of Upper Limb > Flashcards

Flashcards in Muscles of Upper Limb Deck (97):
1

Innervation of Deltoid

Axillary nerve

2

Innervation of Pectoralis Major

Lateral & medial pectoral nerves, from brachial plexus (branching off from lateral & medial cords)

3

Innervation of Latissimus Dorsi

Thoracodorsal nerve, from brachial plexus (branching off from posterior cord)

4

Innervation of Supraspinatus

Suprascapular nerve, from brachial plexus (C5 & C6, branching off from the superior trunk)

5

Innervation of Infraspinatus

Suprascapular nerve, from the brachial plexus (C5 & C6, branching off from superior trunk)

6

Innervation of Teres Major

Inferior subscapular nerve, from brachial plexus (branching off from posterior cord)

7

Innervation of Teres Minor

Axillary nerve

8

Innervation of Subscapularis

Superior & inferior subscapular nerves, from brachial plexus (branching off from posterior cord)

9

Innervation of Serratus Anterior

Long thoracic nerve

10

Innervation of Biceps Brachii

Musculocutaneous nerve

11

Innervation of Coracobrachialis

Musculocutaneous nerve

12

Innervation of Triceps Brachii

Radial nerve

13

Innervation of Pectoralis Minor

Medial pectoral nerve

14

Innervation of Levator Scapulae

Dorsal scapular nerve, C3 & C4

15

Innervation of Rhomboid Major & Minor

Dorsal scapular nerve

16

Innervation of Trapezius

Spinal root of accessory nerve, C3 & C4

17

Innervation of Subclavius

Subclavian nerve (branching off from superior trunk)

18

Innervation of Anconeus

Radial nerve

19

Innervation of Brachioradialis

Radial nerve

20

Innervation of Brachialis

Musculocutaneous nerve

21

Innervation of Abductor Digiti Minimi

Deep branch of ulnar nerve

22

Innervation of Abductor Pollicis Brevis

Median nerve (recurrent branch)

23

Innervation of Abductor Pollicis Longus

Radial nerve (posterior interosseous)

24

Innervation of Adductor Pollicis

Ulnar nerve (deep branch)

25

Innervation of Extensor Carpi Radialis Brevis

Radial nerve (deep branch)

26

Innervation of Extensor Carpi Radialis Longus

Radial nerve

27

Innervation of Extensor Carpi Ulnaris

Radial nerve (posterior interosseous)

28

Innervation of Extensor Digiti Minimi

Radial nerve (posterior interosseous)

29

Innervation of Extensor Digitorum

Radial nerve (posterior interosseous)

30

Innervation of Extensor Indicis

Radial nerve (posterior interosseous)

31

Innervation of Extensor Pollicis Brevis

Radial nerve (posterior interosseous)

32

Innervation of Extensor Pollicis Longus

Radial nerve (posterior interosseous)

33

Innervation of Flexor Carpi Radialis

Median nerve

34

Innervation of Flexor Carpi Ulnaris

Ulnar nerve

35

Innervation of Flexor Digitorum Profundus

Medial part: ulnar nerve
Lateral part: median nerve

36

Innervation of Flexor Digitorum Superficialis

Median nerve

37

Innervation of Flexor Pollicis Brevis

Median nerve (recurrent branch)

38

Innervation of Flexor Pollicis Longus

Median nerve

39

Innervation of Dorsal Interosseous Muscles

Ulnar nerve (deep branch)

40

Innervation of Palmar Interosseous Muscles

Ulnar nerve (deep branch)

41

Innervation of Opponens Digiti Minimi

Ulnar nerve (deep branch)

42

Innervation of Opponens Pollicis

Median nerve (recurrent branch)

43

Innervation of Palmaris Longus

Median nerve

44

Innervation of Pronator Quadratus

Median nerve

45

Innervation of Pronator Teres

Median nerve

46

Innervation of Supinator

Radial nerve (deep branch)

47

Muscles innervated by Median nerve

Anterior Compartment of Forearm:
- Pronator Teres
- Flexor Carpi Radialis
- Palmaris Longus
- Flexor Digitorum Superficialis
- Flexor Digitorum Profundus (lateral half only)
- Pronator Quadratus
- Opponens Pollicis (recurrent branch)
- Flexors Pollicis Longus & Brevis (recurrent branch)
- Abductor Pollicis Brevis

48

Muscles innervated by Radial nerve

- Triceps Brachii
- Anconeus
- Brachioradialis
- Abductor Pollicis Longus
- Extensors Carpi Radialis Longus & Brevis
- Extensor Carpi Ulnaris
- Extensor Digiti Minimi
- Extensor Digitorum
- Extensor Indicis
- Extensors Pollicis Brevis & Longus
- Supinator

49

Muscles innervated by Ulnar nerve

- Adductor Pollicis (deep branch)
- Flexor Carpi Ulnaris
- Flexor Digitorum Profundus (medial half only)
- Dorsal & Palmer Interosseous nerves (deep branch)
- Opponens Digiti Minimi (deep branch)
- Extensor Digiti Minimi
- Flexor Digiti Minimi

50

Muscles innervated by Musculocutaneous nerve

- Biceps Brachii
- Coracobrachialis
- Brachialis

51

Action of Deltoid

Abductor of the arm
Lateral & medial rotation of the arm
Flexion & extension of the arm

52

Action of Infraspinatus

Lateral rotation of arm

53

Action of Latissimus Dorsi

Adduction of arm
Medial rotation
Extension at shoulder

54

Action of Pectoralis Major

Adduction of arm
Flexion
Medial rotation

55

Action of Serratus Anterior

Protraction & retraction of scapula

56

Action of Subscapularis

Medial rotation

57

Action of Supraspinatus

Abduction of arm

58

Action of Teres Major

Medial rotation of arm
Adduction

59

Action of Teres Minor

Lateral rotation of arm

60

Action of Anconeus

Extend forearm
Adduct arm

61

Action of Biceps Brachii

Flex the arm
Flex forearm
Supinate forearm

62

Action of Brachialis

Flex forearm

63

Action of Brachioradialis

Flex forearm

64

Action of Pronator Teres

Pronate forearm

65

Action of Supinator

Extend forearm
Supinate forearm

66

Action of Triceps Brachii

Extend forearm
Adduct arm

67

Action of Abductor Digiti Minimi

Abduct little finger

68

Action of Abductor Pollicis Brevis

Abduct thumb (helps opposition)

69

Action of Abductor Pollicis Longus

Abduct thumb
Extend thumb at carpometacarpal joint

70

Action of Adductor Pollicis

Adduct thumb
Rotate thumb medially

71

Action of Coracobrachialis

Helps flex & adduct arm

72

Action of Extensors Carpi Radialis Brevis & Longus

Extend & abduct hand at wrist joint

73

Action of Extensor Carpi Ulnaris

Extend & adduct hand at wrist joint

74

Action of Extensor Digiti Minimi

Extend little finger at metacarpo- & inter-phalangeal joints

75

Action of Extensor Digitorum

Extend the medial 4 fingers at metacarpophalangeal joints
Extend hand at wrist joint

76

Action of Extensor Pollicis Brevis

Extend thumb at carpometacarpal joint

77

Action of Extensor Pollicis Longus

Extend thumb at carpometacarpal & interphalangeal joitns

78

Action of Flexors Carpi Radialis & Ulnaris

Flex & adduct hand at wrist

79

Action of Flexor Digiti Minimi Brevis

Flex proximal phalanx of little finger

80

Action of Flexor Digitorum Profundus

Flex distal phalanges of medial 4 fingers
Assist with flexion of hand

81

Action of Flexor Digitorum Superficialis

Flex middle phalanges of medial 4 fingers

82

Action of Flexors Pollicis Brevis & Longus

Flex thumb

83

Action of Dorsal Interosseous Muscles
Action of Palmar Interosseous Muscles (digits 1-3)
PAD DAB

Abduct digits
Flex metacarpophalangeal joints (with lumbricals)
Extend interphalangeal joints

84

Action of Opponens Digiti Minimi

Helps with opposition of little finger to thumb (lateral rotation)

85

Action of Opponens Pollicis

Helps with opposition of little finger to thumb (medial rotation)

86

Action of Palmaris Longus

Flex hand at wrist
Tense palmar aponeurosis

87

Muscles innervated by Dorsal Scapular nerve

- Levator Scapulae
- Rhomboid Major & Minor

88

Muscles innervated by Axillary nerve

- Deltoid
- Teres Minor

89

Innervation of Extensors Pollicis Longus & Brevis

Radial nerve

90

List of intrinsic muscles of the hand

Thenar muscles:
- abductor pollicis brevis
- flexor pollicis brevis
- opponens pollicis
Hypothenar muscles:
- abductor digiti minimi
- flexor digiti minimi
- opponens digiti minimi
Dorsal & Palmar Interosseous
Lumbricals
Adductor Pollicis
Palmaris Brevis

91

List of extrinsic muscles of the hand

Flexor Carpi Radialis
Palmaris Lungus
Flexor Carpi Ulnaris
Flexor Digitorum Superficialis
Flexor Digitorum Profundus
Flexor Pollicis Longus

Extensor Carpi Radialis Longus & Brevis
Extensor Digitorum
Extensor Digiti Minimi
Extensor Carpi Ulnaris
Abductor Pollicis Longus
Extensor Pollicis Longus & Brevis
Extensor Indicis

92

Origin & insertion of biceps brachii

1. Coracoid process. 2. Supraglenoid tubercle

Radial tuberosity

93

Origin & insertion of brachialis

Anterior shaft humerus

Coronoid process & tuberosity of ulna

94

Origin & insertion of triceps brachii

1. Infraglenoid tubercle. 2. Inferior 2/3 humerus. 3. Proximal posterior humerus

Olecranon

95

Origin & insertion of brachioradialis

Lateral supracondylar ridge

Styloid process radius

96

Origin & insertion of pronator teres

1. Medial epicondyle & supracondylar ridge. 2. Coronoid process

Middle lateral radius

97

Origin & insertion of supinator

Lateral epicondyle