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EXCI 253 > Muscles and innervation of shoulder girdle and upper extremity > Flashcards

Muscles and innervation of shoulder girdle and upper extremity Flashcards

(93 cards)

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1
Q

I of Pectoralis major

A

Greater tubercule and lateral lip of intertubercular groove of humerus

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2
Q

O clavicular head of Pectoralis Major m.

A

Medial clavicle

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3
Q

O of sternal head of Pectoralis major m.

A

Sternum and costal cartilages of ribs 2-6

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4
Q

Action of Pectoralis major m.

A

Flexion, Medial rotation and adduction of humerus

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5
Q

Innervation of Pectoralis major m.

A

Medial and lateral pectoral n.

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6
Q

O of Pectoralis minor m.

A

Ribs 2-5 (sometimes 3-5 or 2-4) near their costal cartilages

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7
Q

I of Pectoralis minor m.

A

Coracoid process of Scapula

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8
Q

Action of Pectoralis minor m.

A

Abduction, downward rotations of scapula & assists in elevation of ribs when pectoral girdle is fixed

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9
Q

Innervation of Pectoralis minor m.

A

Medial pectoral n.

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10
Q

O of Subclavius m.

A

1st rib

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11
Q

I of Subclavius m.

A

Subclavian groove of Clavicle

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12
Q

Action of Subclavius m.

A

Depress clavicle

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13
Q

Innervation of subclavius m.

A

Subclavian n.

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14
Q

O of Serratus anterior m.

A

Ribs 1-8 (sometimes 1-9)

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15
Q

I of Serratus anterior m.

A

Medial border & inferior angle of scapula

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16
Q

Action of Serratus anterior m.

A

Abduction & upward rotation of Scapula (protraction)

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17
Q

Innervation of Serratus anterior m.

A

Long thoracic n.

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18
Q

O of Serratus posterior superior m.

A

Ligament nuchea & spinous processes of C7-T3 vertebrae

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19
Q

I of Serratus posterior superior m.

A

Superior border of ribs 2 to 4

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20
Q

Action of Serratus posterior superior m.

A

Elevation of ribs

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21
Q

Innervation of Serratus posterior superior m.

A

2-5 intercostal n.

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22
Q

O of Serratus posterior inferior m.

A

Spinous processes of T11-L12 vertebrae

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23
Q

I of Serratus posterior inferior m.

A

Inferior borders of ribs 8-12 near their angles

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24
Q

Action of Serratus posterior inferior m.

A

Depression of ribs

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25
Innervation of Serratus posterior inferior m.
9-12 thoracic n.
26
O of Trapezius m.
Occipital bone, ligamentum nuchea & spinous processes of C7-T12
27
I of Trapezius m.
Lateral 1/3 of clavicle, spine and acromion of scapula
28
Action of superior fibers of Trapezius m.
Upward rotation of scapula, can also extend head
29
Action of middle fibers of Trapezius m.
Adduction of scapula (retraction)
30
Action of inferior fibers of Trapezius m.
Depression & upward rotation of scapula
31
Innervation of Trapezius m.
Accessory n. (CN XI) and cervical spinal n. C3-C5
32
O of Latissimus dorsi m.
Spinous processes of T7-L5, Sacral crest, iliac crest and inferior 4 ribs
33
I of Latissimus dorsi m.
Floor of intertubercular groove of humerus b.
34
Action of Latissimus dorsi m.
Extension, adduction and medial rotation of humerus
35
Innervation of Latissimus dorsi m.
Thoracodorsal n.
36
O of Levator scapulae m.
Transverse processes of C1-C4
37
I of Levator scapulae m.
Upper 1/3 of medial border of scapulae
38
Action of Levator scapulae m.
Elevation & Downward rotation of the scapula
39
Innervation of Levator Scapulae m.
Dorsal scapular n. and cervical n. C3-C5
40
O of Rhomboid major m.
Spinous process of T2-T5
41
I of Rhomboid major m.
Lower 1/3 of medial border of scapula
42
Action of Rhomboid major m.
Elevation, adduction & downward rotation of scapula; stabilizes scapula
43
Innervation of Rhomboid major m.
Dorsal scapular n.
44
O of Rhomboid minor m.
Spinous processes of C7-T1
45
I of Rhomboid minor m.
Medial border of scapula superior to spine
46
Action of Rhomboid minor m.
Elevation, adduction & downward rotation of scapula; stabilizes scapula
47
Innervation of Rhomboid minor m.
Dorsal scapular n.
48
O of Deltoid m.
Lateral 1/3 of clavicle, acromion and spine of scapula
49
I of Deltoid m.
Deltoid tuberosity of humerus
50
Action of anterior fibers of Deltoid m.
Flexion & medial rotation of humerus
51
Action of lateral fibers of Deltoid m.
Adbuction of humerus
52
Action of posterior fibers of Deltoid m.
Extension & lateral rotation of humerus
53
Innervation of Deltoid m.
Axillary n.
54
O of Surpraspinatus m.
Supraspinous fossa of scapula
55
I of Supraspinatus m.
Greater tubercule of humerus
56
Action of Supraspinatus m.
Assists deltoid m. in abduction of humerus at shoulder jnt
57
Innervation of Supraspinatus m.
Suprascapular n.
58
O of Infraspinatus m.
Infraspinous fossa of scapula
59
I of Infraspinatus m.
Greater tubercule of humerus
60
Action of Infraspinatus m.
Lateral rotation of humerus at shoulder jnt.
61
Innervation of Infraspinatus m.
Suprascapular n.
62
O of Teres minor m.
Inferior lateral border of scapula
63
I of Teres minor m.
Greater tubercule of Humerus
64
Action of Teres minor m.
Lateral rotation of humerus at shoulder jnt
65
Innervation of Teres minor m.
Axillary n.
66
O of Teres major m.
Inferior angle of Scapula
67
I of Teres major m.
Medial lip of intertubercular groove of Humerus
68
Action of Teres major m.
Extends and assists in adduction & medial rotation of humerus at shoulder jnt.
69
Innervation of Teres major m.
Lower subscapular n.
70
O of Subscapularis m.
Subscapular fossa of scapula
71
I of Subscapularis m.
Lesser tubercle of humerus
72
Action of Subscapularis m.
Medial rotation of Humerus at shoulder jnt
73
Innervation of Subscapularis m.
Upper & Lower subscapular n.
74
Rotator cuff muscles
Supraspinatus m. ; Infraspinatus m. ; Teres minor m. ; Subscapularis m.
75
O of the long head of Biceps brachii m.
Supraglenoid tubercle of scapula
76
I of Biceps brachii m.
Radial tuberosity of radius & deep fascia of forearm via bicipital aponeuroseus
77
Action of Biceps brachii m.
Flexion of forearm at elbow jnt., supination of the forearm at radio-ulnar jnt., flexion of humerus at shoulder jnt.
78
Innervation of Biceps brachii m.
Musculocutaneous n.
79
O of the short head of Biceps brachii m.
Coracoid process of the scapula
80
O of Brachialis m.
Distal anterior surface of humerus
81
I of Brachialis m.
Ulnar tuberosity and corocoid process of ulna
82
Action of Brachialis m.
Flexion of forearm at elbow jnt
83
Innervation of Brachialis m.
Musculocutenous n. & radial n.
84
O of Coracobrachialis m.
Coracoid process of scapula
85
I of Coracobrachialis m.
Middle 1/3 of medial surface of shaft of humerus
86
Action of Coracobrachialis m.
Flexion & adduction of humerus at shoulder jnt.
87
Innervation of COracobrachialis m.
Musculocutaneous n.
88
O of long head of Triceps Brachii m.
Infraglenoid tubercle of scapula
89
O of lateral head of Triceps Brachii m.
Lateral and posterior surface of humerus, above radial groove
90
O of medial head of Tricpes Brachii m.
Posterior surface of humerus, below radial groove
91
I of Triceps brachii m.
Olecranon process of ulna
92
Action of Triceps Brachii m.
Extension of humerus at shoulder jnt, & extension of forearm at elbow jnt.
93
Innervation of Triceps brachii m.
Radial n.

EXCI 253 (14 decks)

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