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Anatomy > MOINA of Shoulder and Arm > Flashcards

MOINA of Shoulder and Arm Flashcards

1
Q

origin of pectoralis major

A

clavicle, sternum, upper six costal cartilages

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2
Q

insertion of pectoralis major

A

lateral lip of bicipital groove of humerus

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3
Q

nerve of pectoralis major

A

medial and lateral pectoral nerves from brachial plexus

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4
Q

action of pectoralis major

A

adducts the arm and roatates it medially; clavicular fibers also flex arm

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5
Q

origin of pectoralis minor

A

third, fourth, and fifth ribs

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6
Q

insertion of pectoralis minor

A

coracoid process of scapula

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7
Q

nerve of pectoralis minor

A

medial pectoral nerve from brachial plexus

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8
Q

action of pectoralis minor

A

depresses point of shoulder; if the scapula is fixed, it elevates the ribs of origin

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9
Q

origin of subclavius

A

first costal cartilage

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10
Q

insertion of subclavius

A

clavicle

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11
Q

nerve of subclavius

A

nerve to subclavius from upper trunk of brachial plexus

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12
Q

action of subclavius

A

depresses clavicle and steadies this bone during movements of the shoulder girdle

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13
Q

origin of serratus anterior

A

upper eight ribs

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14
Q

insertion of serratus anterior

A

medial border and inferior angle of scapula

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15
Q

nerve of serratus anterior

A

long thoracic nerve

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16
Q

action of serratus anterior

A

draws the scapula forward around the thoracic wall; rotates scapula

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17
Q

origin of trapezius

A

occipital bone, ligamentum nuchae, spines of seventh cervical vertebra, spines of all thoracic vertebrae

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18
Q

insertion of trapezius

A

upper fibers into lateral third of clavicle, middle and lower fibers into acromion and spine of scapula

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19
Q

nerve of trapezius

A

spinal part of accessory nerve (motor) and c3 and 4 (sensory)

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20
Q

action of trapezius

A

upper fibers elevate the scapula; middle fibers pull scapula medially; lower fibers pull medial border of scapula downward

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21
Q

origin of latissimus dorsi

A

illiac crest, lumbar fascia, spines of lower six thoracic vertebrae, lower three or four ribs, and inferior angle of scapula

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22
Q

insertion of latissimus dorsi

A

floor of bicipital groove of humerus

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23
Q

nerve of latissimus dorsi

A

thoracodorsal nerve

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24
Q

action of latissimus dorsi

A

extends, adducts, and medially rotates the arm

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25
Q

origin of levator scapulae

A

transverse processes of first four cervical vertebrae

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26
Q

insertion of levator scapulae

A

medial border of scapula

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27
Q

nerve of levator scapulae

A

c3 and 4 and dorsal scapular nerve

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28
Q

action of levator scapulae

A

raises medial border of scapula

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29
Q

origin of rhomboid minor

A

ligamentum nuchae and spines of seventh cervical and first thoracic vertebrae

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30
Q

insertion of rhomboid minor

A

medial border of scapula

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31
Q

nerve of rhomboid minor

A

dorsal scapular nerve

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32
Q

action of rhomboid minor

A

raises medial border of scapula upward and medially

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33
Q

origin of rhomboid major

A

second to fifth thoracic spines

34
Q

insertion of rhomboid major

A

medial border of scapula

35
Q

nerve of rhomboid major

A

dorsal scapular nerve

36
Q

action of rhomboid major

A

raises medial border of scapula upward and medially

37
Q

origin of deltoid

A

lateral third of clavicle, acromion, spine of scapula

38
Q

insertion of deltoid

A

middle of lateral surface of shaft of humerus

39
Q

nerve of deltoid

A

axillary nerve

40
Q

action of deltoid

A

abducts arm; anterior fibers flex and medially rotate arm; posterior fibers extend and laterally rotate arm

41
Q

origin of supraspinatus

A

supraspinous fossa of scapula

42
Q

insertion of supraspinatus

A

greater tuberosity of humerus; capsule of shoulder joint

43
Q

nerve of supraspinatus

A

suprascapular nerve

44
Q

action of supraspinatus

A

abducts arm and stabilizes shoulder joint

45
Q

origin of infraspinatus

A

infraspinous fossa of scapula

46
Q

insertion of infraspinatus

A

greater tuberosity of humerus; capsule of shoulder joint

47
Q

nerve of infraspinatus

A

suprascapular nerve

48
Q

action of infraspinatus

A

laterally rotates arm and stabilizes shoulder joins

49
Q

origin of teres major

A

lower third of lateral border of scapula

50
Q

insertion of teres major

A

medial lip of bicipital groove of humerus

51
Q

nerve of teres major

A

lower subscapular nerve

52
Q

action of teres major

A

medially rotates and adducts arm and stabilizes shoulder joint

53
Q

origin of teres minor

A

upper two thirds of lateral border of scapula

54
Q

insertion of teres minor

A

greater tuberosity of humerus; capsule of shoulder joint

55
Q

nerve of teres minor

A

axillary nerve

56
Q

action of teres minor

A

laterally rotates arm and stabilizes shoulder joint

57
Q

origin of subscapularis

A

subscapular fossa

58
Q

insertion of subscapularis

A

lesser tuberosity of humerus

59
Q

nerve of subscapularis

A

upper and lower subscapular nerves

60
Q

action of subscapularis

A

medially rotates arm and stabilizes shoulder joint

61
Q

origin of long head of biceps brachii

A

supraglenoid tubercle of scapula

62
Q

insertion of long head biceps brachii

A

tuberosity of radius and bicipital aponeurosis into deep fascia of forearm

63
Q

nerve of long head biceps brachii

A

musculocutaneous nerve

64
Q

action of long head biceps brachii

A

supinator of forearm and flexor of elbow joint; weak flexor of shoulder joint

65
Q

origin of short head biceps brachii

A

coracoid process of scapula

66
Q

insertion of short head biceps brachii

A

tuberosity of radius and bicipital aponeurosis into deep fascia of forearm

67
Q

nerve of short head biceps brachii

A

musculocutaneous nerve

68
Q

action of short head biceps brachii

A

supinator of forearm and flexor of elbow joint; weak flexor of shoulder joint

69
Q

origin of coracobrachialis

A

coracoid process of scapula

70
Q

insertion of coracobrachialis

A

medial aspect of shaft of humerus

71
Q

nerve of coracobrachialis

A

musculocutaneous nerve

72
Q

action of coracobrachialis

A

flexes arm and also process of weak adductor

73
Q

origin of brachialis

A

front of lower half of humerus

74
Q

insertion of brachialis

A

coronoid process of ulna

75
Q

nerve of brachialis

A

musculocutaneous nerve

76
Q

action of brachialis

A

flexor of elbow joint

77
Q

origin of long head of triceps

A

infraglenoid tubercle of scapula

78
Q

origin of lateral head of triceps

A

upper half of posterior surface of shaft of humerus

79
Q

origin of medial head of triceps

A

lower half of posterior surface of shaft of humerus

80
Q

insertion of long, lateral, and medial head of triceps

A

olecranon process of ulna

81
Q

nerve of long, lateral, and medial head of triceps

A

radial nerve

82
Q

action of long, lateral, and medial head of triceps

A

extensor of elbow joint

Anatomy (7 decks)

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