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Shoulder Flashcards

(70 cards)

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1
Q

Deltoid origin

A

Lateral third of clavicle; acromion; spine of scapula

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2
Q

Deltoid insertion

A

Deltoid tuberosity on the humerus

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3
Q

Deltoid innervation

A

Axillary nerve (C5,6) from posterior cord of brachial plexus

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4
Q

Deltoid action

A

Abduction of humerus;
Anterior fibers- assist in flexion;
Posterior fibers- assist in extension

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5
Q

Supraspinatus origin

A

Supraspinous fossa of the scapula

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6
Q

Supraspinatus insertion

A

Superior facet of greater tubercle of humerus

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7
Q

Supraspinatus innervation

A

Suprascapular nerve C5,6

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8
Q

Supraspinatus action

A

Initiates abduction of arm

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9
Q

Infraspinatus origin

A

Infraspinous fossa

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10
Q

Infraspinatus insertion

A

Middle facet of greater tubercle of humerus

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11
Q

Infraspinatus innervation

A

Suprascapular C5,C6

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12
Q

Infraspinatus action

A

Rotates humerus laterally

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13
Q

Teres major origin

A

Lower lateral border and inferior angle of the scapula

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14
Q

Teres major insertion

A

Crest of lesser tubercle and medial lip of intertubercular sulcus of humerus

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15
Q

Teres major action

A

Adducts and medially rotates the humerus. Assists with extension of the arm.

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16
Q

Teres major innervation

A

Lower subscapular nerve C5, C6

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17
Q

Teres minor origin

A

Lateral border of Scapula

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18
Q

Teres minor insertion

A

Inferior facet of the greater tubercle of the humerus

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19
Q

Teres minor action

A

Rotates humerus laterally and weakly adducts humerus

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20
Q

Teres minor innervation

A

Axillary C5,6

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21
Q

Subscapular origin

A

Subscapular fossa

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22
Q

Subscapular insertion

A

Lesser tubercle of humerus

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23
Q

Subscapular action

A

Medially rotates humerus

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24
Q

Subscapular innervation

A

Upper and lower subscapular nerve C5, C6

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25
Biceps brachii origin
Long head: supraglenoid tubercle of humerus | Short head: coracoid process
26
Biceps brachii insertion
Tuberosity of radius and the bicipital aponeurosis
27
Biceps brachii action
Flexes and supinates the forearm | Long head: assists in flexing the humerus
28
Biceps brachii innervation
Musculocutaneous C5, C6
29
Brachialis origin
Distal half of anterior surface of the humerus
30
Brachialis insertion
Tuberosity of the ulna and anterior surface of the coronoid process
31
Brachialis action
Flexor of the forearm
32
Brachialis innervation
Musculocutaneous nerve C5, C6
33
Coracobrachialis origin
Coracoid process of scapula
34
Coracobrachialis insertion
Middle third of medial surface of humerus
35
Coracobrachialis action
Flexes and adducts the arm
36
Coracobrachialis innervation
Musculocutaneous nerve C6, C7
37
Triceps Brachii origin
Long head: infraglenoid tubercle of the scapula Lateral head: posterior surface and lateral border of the humerus; and the lateral intermuscular septum Medial head: posterior surface and medial border of the humerus; and the medial intermuscular septum
38
Triceps Brachii Insertion
Posterior part of the olecranon process of the ulna; and the deep fascia of the dorsal forearm
39
Triceps Brachii Action
Extend the forearm at the elbow joint | Long head: Extends the humerus at the shoulder joint
40
Triceps Brachii Innervation
Radial Nerve C7 C8
41
Pectoralis Major Origin
Medial half of clavicle, first six ribs and sternum
42
Pectoralis Major Insertion
Humerus, lateral lip of intertubercular sulcus
43
Pectoralis Major Action
Adducts and medially rotates arm; Sternal part: extends humerus Clavicular part: flex humerus
44
Pectoralis Major innervation
Lateral Pectoral C5, C6, C7 and medial pectoral C8, T1
45
Pectoralis Minor Origin
Ribs 2-5
46
Pectoralis Minor Insertion
Coracoid Process
47
Pectoralis Minor Action
Protracts scapula (abduction), depress scapula, elevate ribs during forced inhalation
48
Pectoralis Minor Innervation
Medial pectoral nerve C8, T1
49
Subclavius Origin
First rib and cartilage
50
Subclavius Insertion
Inferior surface of middle third of clavicle
51
Subclavius Action
Depress clavicle and stabilize S/C joint
52
Subclavius Innervation
Subclavian nerve C5, C6
53
Pectoralis major Blood Supply
Pectoral branch of the thoracoacromial trunk
54
Pectoralis Minor Blood Supply
Pectoral branch of the thoracoacromial trunk
55
Serratus Anterior Blood Supply
Lateral thoracic artery
56
Subscapularis blood supply
Subscapular artery
57
Deltoid Blood supply
Posterior circumflex humeral artery
58
Supraspinatus blood supply
Suprascapular artery
59
Infraspinatus blood supply
Suprascapular artery
60
Teres Major blood supply
Subscapular and circumflex scapular artery
61
Teres Minor blood supply
Subscapular and circumflex scapular artery
62
Biceps brachii blood supply
Brachial artery
63
Brachialis blood supply
Brachial artery
64
Coracobrachialis blood supply
Brachial artery
65
Triceps brachii blood supply
Deep brachial a
66
Subclavian Blood Supply
Clavicular branch of thoracoacromial artery
67
Serratus Anterior Origin
Upper 9 ribs
68
Serratus Anterior Insertion
Medial border of scapula
69
Serratus Anterior Action
Protracts and rotates scapula, holds to thoracic wall
70
Serratus Anterior Innervation
Long Thoracic (C5, C6, C7)

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