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MS 100 > MS Muscles > Flashcards

MS Muscles Flashcards

1
Q

Trapezius origin

A

Medial 1/3 of the superior nuchal line, EOP, ligamentum nuchae, C7-T12

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2
Q

Trapezius Insertion

A

Lateral third of the clavicle acromion process, and the spine of the scapula

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3
Q

Trapezius nerve

A

Accessory nerve and cervical nerve

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4
Q

Action of superior fibres of the trapezius

A

Elevates, rotates, scapula superiorly
Extends head and neck
Contralateral rotation of head and neck
Lateral flexion to the same side

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5
Q

Action of middle fibres of the trapezius

A

Retracts scapula

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6
Q

Action of inferior fibres of the trapezius

A

Depresses scapula and superiorly rotates scapula

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7
Q

Latissimus Dorsi Origin

A

T7-S5, posterior iliac crest, ribs 10-12, inferior angle of scapula

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8
Q

Latissimus dorsi insertion

A

Bicipital groove, medial lip of intertubercular sulcus

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9
Q

Latissimus dorsi nerve

A

Thoracodorsal

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10
Q

Latissimus dorsi action

A

Extends, adducts and medially rotates humerus and assists with forced inspiration

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11
Q

Levator scapulae Origin

A

Posterior tubercles of TVP’s C1-C4

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12
Q

Levator scapulae insertion

A

Vertebral border of the scapula superior to the spine

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13
Q

Levator scapulae nerve

A

Dorsal scapular and cervical

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14
Q

Levator scapulae action

A

Elevates scapula, rotates scapula inferiorly
If shoulder is fixed extension and lateral flexion of the cervical spine

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15
Q

Rhomboideus minor origin

A

C7-T1

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16
Q

Rhomboideus minor insertion

A

Vertical border of the scapula, including root and above

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17
Q

Rhomboideus minor nerve

A

Dorsal scapular

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18
Q

Rhomboideus minor action

A

Retracts, elevates and rotates scapula inferiorly

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19
Q

Rhomboideus major origin

A

T2-T5

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20
Q

Rhomboideus major insertion

A

Vertebral border of the scapula below the spine

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21
Q

Rhomboideus major nerve

A

Dorsal scapular

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22
Q

Rhomboideus major action

A

Retracts, elevates and rotates scapula inferiorly

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23
Q

Deltoid origin

A

Lateral 1/3 of the clavicle, acromion process, and the spine of the scapula

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24
Q

Deltoid insertion

A

Deltoid tuberosity

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25
Q

Deltoid nerve

A

Axillary

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26
Q

Deltoid anterior action

A

Flexion and medial rotation of humerus at GH joint

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27
Q

Deltoid middle action

A

Abducts humerus

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28
Q

Deltoid posterior action

A

Extension and laterally rotates humerus at GH joint

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29
Q

Teres major origin

A

Lower 1/3 of the lateral border of the scapula and across inferior angle to medial border, excluding tip

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30
Q

Teres major insertion

A

Medial lip of intertubercular sulcus (crest of lesser tubercle)

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31
Q

Teres major nerve

A

Lower subscapular

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32
Q

Teres major action

A

Adducts and medially rotates the humerus at GH joint

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33
Q

Supraspinatus origin

A

Supraspinous fossa

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34
Q

Supraspinatus insertion

A

Superior facet on greater tubercle and the joint capsule

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35
Q

Supraspinatus nerve

A

Suprascapular

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36
Q

Supraspinatus action

A

Initiates and then assists deltoid in abduction of humerus at GH joint and stabilizes GH joint

37
Q

Infraspinatus origin

A

Infraspinous fossa

38
Q

Infraspinatus insertion

A

Middle facet on greater tubercle and the joint capsule

39
Q

Infraspinatus nerve

A

Suprascapular

40
Q

Infraspinatus action

A

Lateral rotation of humerus at GH joint and stabilizes GH joint

41
Q

Teres minor origin

A

Lateral boarder of scapula

42
Q

Teres minor insertion

A

Inferior facet of greater tubercle and the joint capsule

43
Q

Teres minor nerve

A

Axillary

44
Q

Teres minor action

A

Lateral rotation of humerus at GH joint and stabilizes GH joint

45
Q

Subscapularis origin

A

Subscapular fossa

46
Q

Subscapularis insertion

A

Lesser tubercle of the humerus and the joint capsule

47
Q

Subscapularis nerve

A

Upper and lower subscapular

48
Q

Subscapularis action

A

Medial rotation of humerus at GH joint and stabilizes GH joint

49
Q

Pectoralis major origin clavicular head

A

Anterior surface of medial half of clavicle

50
Q

Pectoralis major origin sternocostal head

A

Anterior surface of sternum and the upper 6 costal cartilages

51
Q

Pectoralis major origin abdominal head

A

Aponeurosis of external obliques

52
Q

Pectoralis major insertion

A

Lateral lip of intertubercular sulcus and the crest of the greater tubercle

53
Q

Pectoralis major nerve

A

Lateral and medial pectoral nerve

54
Q

Pectoralis major action

A

Adducts, mediately rotates and flexes humerus at GH joint

55
Q

Pectoralis minor origin

A

Ribs 3-5

56
Q

Pectoralis minor insertion

A

Coracoid process

57
Q

Pectoralis minor nerve

A

Medial pectoral nerve

58
Q

Pectoralis minor action

A

Upward tlit
->depresses/draws scap anteriorly
->elevates ribs

59
Q

Serratus anterior origin

A

Ribs 1-8 or 9

60
Q

Serratus anterior insertion

A

Anterior surface of the medial border of the scapula and inferior angle

61
Q

Serratus anterior nerve

A

Long thoracic

62
Q

Serratus anterior action

A

Protract scapula
rotate scapula superiorly
elevates ribs

63
Q

Subclavius origin

A

1st rib and it’s costal cartilage

64
Q

Subclavius insertion

A

Inferior surface of clavicle
(subclavian groove)

65
Q

Subclavius nerve

A

Nerve to subclavius

66
Q

Subclavius action

A

Depresses and stabilizes the clavicle

67
Q

Coracobrachialis origin

A

Coracoid process of scapula

68
Q

Coracobrachialis insertion

A

Middle of the medial shaft of humerus

69
Q

Coracobrachialis nerve

A

Musculocutaneous

70
Q

Coracobrachialis action

A

Flexion and adduction of the humerus at GH joints
“ horizontal flexion”

71
Q

Biceps brachii origin short head

A

Coracoid process

72
Q

Biceps brachii origin long head

A

Supraglenoid tubercle

73
Q

Biceps brachii insertion

A

Radial/ bicipital tuberosity and bicipital aponerosis

74
Q

Biceps brachii nerve

A

Musculocutaneous

75
Q

Biceps brachii action

A

Flexion at elbow joint and supination at radioulnar joints
flexion at GH joint

76
Q

Brachialis origin

A

Distal 1/2 of anterior surface of humerus

77
Q

Brachialis insertion

A

Coronoid process and ulnar tuberosity

78
Q

Brachialis nerve

A

Musculocutaneous

79
Q

Brachialis action

A

Flexion at elbow joint

80
Q

Triceps brachii origin of long head

A

Infraglenoid tubercle

81
Q

Triceps brachii origin of lateral head

A

Lateral and posterior surface of humerus, groove

82
Q

Triceps brachii origin of medial head

A

Posterior surface of humerus inferior to radial groove

83
Q

Triceps brachii insertion

A

Olecranon process

84
Q

Triceps brachii nerve

A

Radial nerve

85
Q

Triceps brachii action

A

Extension of elbow, joint and long head assists with extension at GH joint

86
Q

Anconeus origin

A

Lateral epicondyle

87
Q

Anconeus insertion

A

Olecranon process and proximal shaft of ulna

88
Q

Anconeus nerve

A

Radial nerve

89
Q

Anconeus action

A

Extension at elbow joint and stabilize elbow joint during supination and pronation

MS 100 (5 decks)

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