Shoulder Flashcards

1
Q

Pectoralis Major Origin

A

Clavicular: Ant/Medial Clavicle
Sternocostal: Ant Sternum, 1-6 costal cartridges, aponeurosis of oblique muscle

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2
Q

Pectoralis Major Insertion

A

Intertubercular groove humerus

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3
Q

Pectoralis Major Innervation

A

Lateral and medial pectoral nerves

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4
Q

Pectoralis Major Action

A

Flexes, adducts, and medially rotates arm

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5
Q

Pectoralis Minor Origin

A

Ribs 3-5

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6
Q

Pectoralis Minor Insertion

A

Coracoid Process

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7
Q

Pectoralis Minor Innervation

A

Medial Pectoral Nerve

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8
Q

Pectoralis Minor Action

A

Protraction, lowers lateral angle of scapula

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9
Q

Serratus Anterior Origin

A

Ribs 1-9

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10
Q

Serratus Anterior Insertion

A

Medial border of the scapula

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11
Q

Serratus Anterior Innervation

A

Long thoracic nerve

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12
Q

Serratus Anterior Action

A

protracts and rotates scapula and holds against thoracic wall

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13
Q

Trapezius Origin

A

Superior nuchal line, external occipital protuberance nuchal ligament, spinous processes of C7-T12

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14
Q

Trapezius Insertion

A

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

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15
Q

Trapezius Innervation

A

Accessory nerve

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16
Q

Trapezius Action

A

Elevates, retracts, and rotates scapula; lower fibers depress scapula

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17
Q

Latissimus Dorsi Origin

A

Spinous process T7-T12, L1-L5, sacrum, inferior scapula, posterior 1/3 iliac crest, ribs 9-12, throacolumbar fascia

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18
Q

Latissimus Dorsi Insertion

A

Intertubicular Groove

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19
Q

Latissimus Dorsi Innervation

A

Thoracodorsal nerve

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20
Q

Latissimus Dorsi Action

A

Extends, adducts, and IR humerus

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21
Q

Rhomboid Major and Minor Origin

A

Spinous process T2-T5

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22
Q

Rhomboid Major and Minor Insertion

A

Medial border scapula

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23
Q

Rhomboid Major and Minor Innervation

A

Dorsal Scapular Nerve

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24
Q

Rhomboid Major and Minor Action

A

Fixes scapula to thoracic wal and retracts and rotates it to depress glenoid cavity

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25
Q

Levator Scapulae Origin

A

Transverse process C1-C4

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26
Q

Levator Scapulae Insertion

A

Medial border of the scapula

27
Q

Levator Scapulae Innervation

A

Dorsal scapular nerve and direct branches from C3/C4

28
Q

Levator Scapulae Action

A

Elevates scapula medially, inferiorly rotates glenoid fossa

29
Q

Deltoid Origin

A

Anterior head: lateral 1/3 clavicle;
Middle head: acromion;
Posterior: scapular spine

30
Q

Deltoid Insertion

A

Deltoid Tuberosity

31
Q

Deltoid Innervation

A

Axillary nerve

32
Q

Deltoid Action

A

Anterior: flexion, IR arm
Middle: abduction
Posterior: extension, ER

33
Q

Supraspinatus Origin

A

Supraspinious fossa

34
Q

Supraspinatus Insertion

A

Greater tubercle of the humerus

35
Q

Supraspinatus Innervation

A

Suprascapular nerve

36
Q

Supraspinatus Action

A

Initiates arm abduction

37
Q

Infraspinatus Origin

A

Infraspinatus fossa scapula

38
Q

Infraspinatus Insertion

A

Greater tubercle of the humerus

39
Q

Infraspinatus Innervation

A

Suprascapular nerve

40
Q

Infraspinatus Action

A

Lateral rotation of arm (ER)

41
Q

Teres Minor Origin

A

Posterior surface of lateral border of scapula

42
Q

Teres Minor Insertion

A

Greater tubercle of humerus

43
Q

Teres Minor Innervation

A

Axillary nerve

44
Q

Teres Minor Action

A

Laterally rotates (ER) the arm, horizontal abduction; stabilization of shoulder

45
Q

Subscapularis Origin

A

Subscapular fossa

46
Q

Subscapularis Insertion

A

Lesser tubercle of the humerus

47
Q

Subscapularis Innervation

A

Upper and lower Subscapular nerves

48
Q

Subscapularis Action

A

Medially rotates (IR) and adducts the arm; helps hold humeral head in glenoid fossa

49
Q

Teres Major Origin

A

Posterior surface of inferior angle

50
Q

Teres Major Insertion

A

Intertubercular sulcus of humerus

51
Q

Teres Major Innervation

A

Lower Subscapular nerve

52
Q

Teres Major Action

A

Adducts and medially rotates arm

53
Q

Biceps Brachii Origin

A

Long head: supraglenoid tubercle scapula
Short head: coracoid process

54
Q

Biceps Brachii Insertion

A

Radial Tuberosity

55
Q

Biceps Brachii Innervation

A

Musculocutaneous nerve

56
Q

Biceps Brachii Action

A

Flexes and supinates forearm at elbow

57
Q

Coracobrachialis Origin

A

Coracoid process

58
Q

Coracobrachialis Insertion

A

Medial humerus

59
Q

Coracobrachialis Innervation

A

Musculocutaneous nerve

60
Q

Coracobrachialis Action

A

Flexes and adducts arm at shoulder

61
Q

Triceps Brachii Origin

A

Lateral head: posterior surface humerus
Medial head: posterior surface humerus
Long head: infraglenoid tuberosity of scapula

62
Q

Triceps Brachii Insertion

A

Olecranon of Ulna

63
Q

Triceps Brachii Innervation

A

Radial nerve

64
Q

Triceps Brachii Action

A

Extends forearm at elbow; long head stabilizes head of abducted humerus and extends and adducts arm