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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
Deltoid nerve
Axillary
26
Deltoid anterior action
Flexion and medial rotation of humerus at GH joint
27
Deltoid middle action
Abducts humerus
28
Deltoid posterior action
Extension and laterally rotates humerus at GH joint
29
Teres major origin
Lower 1/3 of the lateral border of the scapula and across inferior angle to medial border, excluding tip
30
Teres major insertion
Medial lip of intertubercular sulcus (crest of lesser tubercle)
31
Teres major nerve
Lower subscapular
32
Teres major action
Adducts and medially rotates the humerus at GH joint
33
Supraspinatus origin
Supraspinous fossa
34
Supraspinatus insertion
Superior facet on greater tubercle and the joint capsule
35
Supraspinatus nerve
Suprascapular
36
Supraspinatus action
Initiates and then assists deltoid in abduction of humerus at GH joint and stabilizes GH joint
37
Infraspinatus origin
Infraspinous fossa
38
Infraspinatus insertion
Middle facet on greater tubercle and the joint capsule
39
Infraspinatus nerve
Suprascapular
40
Infraspinatus action
Lateral rotation of humerus at GH joint and stabilizes GH joint
41
Teres minor origin
Lateral boarder of scapula
42
Teres minor insertion
Inferior facet of greater tubercle and the joint capsule
43
Teres minor nerve
Axillary
44
Teres minor action
Lateral rotation of humerus at GH joint and stabilizes GH joint
45
Subscapularis origin
Subscapular fossa
46
Subscapularis insertion
Lesser tubercle of the humerus and the joint capsule
47
Subscapularis nerve
Upper and lower subscapular
48
Subscapularis action
Medial rotation of humerus at GH joint and stabilizes GH joint
49
Pectoralis major origin clavicular head
Anterior surface of medial half of clavicle
50
Pectoralis major origin sternocostal head
Anterior surface of sternum and the upper 6 costal cartilages
51
Pectoralis major origin abdominal head
Aponeurosis of external obliques
52
Pectoralis major insertion
Lateral lip of intertubercular sulcus and the crest of the greater tubercle
53
Pectoralis major nerve
Lateral and medial pectoral nerve
54
Pectoralis major action
Adducts, mediately rotates and flexes humerus at GH joint
55
Pectoralis minor origin
Ribs 3-5
56
Pectoralis minor insertion
Coracoid process
57
Pectoralis minor nerve
Medial pectoral nerve
58
Pectoralis minor action
Upward tlit ->depresses/draws scap anteriorly ->elevates ribs
59
Serratus anterior origin
Ribs 1-8 or 9
60
Serratus anterior insertion
Anterior surface of the medial border of the scapula and inferior angle
61
Serratus anterior nerve
Long thoracic
62
Serratus anterior action
Protract scapula rotate scapula superiorly elevates ribs
63
Subclavius origin
1st rib and it’s costal cartilage
64
Subclavius insertion
Inferior surface of clavicle (subclavian groove)
65
Subclavius nerve
Nerve to subclavius
66
Subclavius action
Depresses and stabilizes the clavicle
67
Coracobrachialis origin
Coracoid process of scapula
68
Coracobrachialis insertion
Middle of the medial shaft of humerus
69
Coracobrachialis nerve
Musculocutaneous
70
Coracobrachialis action
Flexion and adduction of the humerus at GH joints “ horizontal flexion”
71
Biceps brachii origin short head
Coracoid process
72
Biceps brachii origin long head
Supraglenoid tubercle
73
Biceps brachii insertion
Radial/ bicipital tuberosity and bicipital aponerosis
74
Biceps brachii nerve
Musculocutaneous
75
Biceps brachii action
Flexion at elbow joint and supination at radioulnar joints flexion at GH joint
76
Brachialis origin
Distal 1/2 of anterior surface of humerus
77
Brachialis insertion
Coronoid process and ulnar tuberosity
78
Brachialis nerve
Musculocutaneous
79
Brachialis action
Flexion at elbow joint
80
Triceps brachii origin of long head
Infraglenoid tubercle
81
Triceps brachii origin of lateral head
Lateral and posterior surface of humerus, groove
82
Triceps brachii origin of medial head
Posterior surface of humerus inferior to radial groove
83
Triceps brachii insertion
Olecranon process
84
Triceps brachii nerve
Radial nerve
85
Triceps brachii action
Extension of elbow, joint and long head assists with extension at GH joint
86
Anconeus origin
Lateral epicondyle
87
Anconeus insertion
Olecranon process and proximal shaft of ulna
88
Anconeus nerve
Radial nerve
89
Anconeus action
Extension at elbow joint and stabilize elbow joint during supination and pronation

MS 100 (5 decks)

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