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Anatomy > Shoulder > Flashcards

Shoulder Flashcards

(64 cards)

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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
Levator Scapulae Origin
Transverse process C1-C4
26
Levator Scapulae Insertion
Medial border of the scapula
27
Levator Scapulae Innervation
Dorsal scapular nerve and direct branches from C3/C4
28
Levator Scapulae Action
Elevates scapula medially, inferiorly rotates glenoid fossa
29
Deltoid Origin
Anterior head: lateral 1/3 clavicle; Middle head: acromion; Posterior: scapular spine
30
Deltoid Insertion
Deltoid Tuberosity
31
Deltoid Innervation
Axillary nerve
32
Deltoid Action
Anterior: flexion, IR arm Middle: abduction Posterior: extension, ER
33
Supraspinatus Origin
Supraspinious fossa
34
Supraspinatus Insertion
Greater tubercle of the humerus
35
Supraspinatus Innervation
Suprascapular nerve
36
Supraspinatus Action
Initiates arm abduction
37
Infraspinatus Origin
Infraspinatus fossa scapula
38
Infraspinatus Insertion
Greater tubercle of the humerus
39
Infraspinatus Innervation
Suprascapular nerve
40
Infraspinatus Action
Lateral rotation of arm (ER)
41
Teres Minor Origin
Posterior surface of lateral border of scapula
42
Teres Minor Insertion
Greater tubercle of humerus
43
Teres Minor Innervation
Axillary nerve
44
Teres Minor Action
Laterally rotates (ER) the arm, horizontal abduction; stabilization of shoulder
45
Subscapularis Origin
Subscapular fossa
46
Subscapularis Insertion
Lesser tubercle of the humerus
47
Subscapularis Innervation
Upper and lower Subscapular nerves
48
Subscapularis Action
Medially rotates (IR) and adducts the arm; helps hold humeral head in glenoid fossa
49
Teres Major Origin
Posterior surface of inferior angle
50
Teres Major Insertion
Intertubercular sulcus of humerus
51
Teres Major Innervation
Lower Subscapular nerve
52
Teres Major Action
Adducts and medially rotates arm
53
Biceps Brachii Origin
Long head: supraglenoid tubercle scapula Short head: coracoid process
54
Biceps Brachii Insertion
Radial Tuberosity
55
Biceps Brachii Innervation
Musculocutaneous nerve
56
Biceps Brachii Action
Flexes and supinates forearm at elbow
57
Coracobrachialis Origin
Coracoid process
58
Coracobrachialis Insertion
Medial humerus
59
Coracobrachialis Innervation
Musculocutaneous nerve
60
Coracobrachialis Action
Flexes and adducts arm at shoulder
61
Triceps Brachii Origin
Lateral head: posterior surface humerus Medial head: posterior surface humerus Long head: infraglenoid tuberosity of scapula
62
Triceps Brachii Insertion
Olecranon of Ulna
63
Triceps Brachii Innervation
Radial nerve
64
Triceps Brachii Action
Extends forearm at elbow; long head stabilizes head of abducted humerus and extends and adducts arm

Anatomy (4 decks)

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