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pt gross > Anterior Shoulder - Axilla and Arm Muscles > Flashcards

Anterior Shoulder - Axilla and Arm Muscles Flashcards

1
Q

Pectoralis Major- Clavicular Head Origin

A

Anterior surface of medial half of clavicle

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2
Q

Pectoralis Major- Clavicular Head Insertion

A

Lateral lip intertubercular sulcus of humerus

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3
Q

Pectoralis Major- Clavicular Head Innervation

A

Lateral and medial pectoral nerves; clavicular head (C5,C6), sternocostal head (C7,C8,T1)

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4
Q

Pectoralis Major- Clavicular Head Action

A

Both heads adducts and medially rotates humerus; draws scapula anteriorly and inferiorly. Clavicular head flexes humerus

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5
Q

Pectoralis Major- Sternocostal Head Origin

A

Anterior surface of sternum, superior six costal cartilages, aponeurosis of external oblique muscle

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6
Q

Pectoralis Major- Sternocostal Head Insertion

A

Lateral lip intertubercular sulcus of humerus

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7
Q

Pectoralis Major- Sternocostal Head Innervation

A

Lateral and medial pectoral nerves; clavicular head (C5,C6), sternocostal head (C7,C8,T1)

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8
Q

Pectoralis Major- Sternocostal Head Action

A

Both heads adducts and medially rotates humerus; draws scapula anteriorly and inferiorly. Sternocostal head extends it from the flexed position

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9
Q

Serratus Anterior Origin

A

External surfaces of lateral parts of 1st-8th ribs

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10
Q

Serratus Anterior Insertion

A

Anterior surface of medial border of 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 scapula and holds it against thoracic wall; rotates scapula

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13
Q

Serratus Anterior Root

A

C5,C6,C7

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14
Q

Subclavius Origin

A

Junction of 1st rib and its costal cartilage

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15
Q

Subclavius Insertion

A

Inferior surface of middle third of clavicle

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16
Q

Subclavius Innervation

A

Nerve to subclavius (C5,C6)

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17
Q

Subclavius Root

A

C5,C6

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18
Q

Coracobrachialis Origin

A

Tip of coracoid process of scapula

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19
Q

Coracobrachialis Insertion

A

Middle third of medial surface of humerus

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20
Q

Coracobrachialis Innervation

A

Musculocutaneous nerve (C5,C6,C7)

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21
Q

Coracobrachialis Action

A

Helps flex and adduct arm; resists dislocation of shoulder

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22
Q

Biceps Brachii - Short Head Origin

A

Tip of coracoid process of scapula

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23
Q

Biceps Brachii - Short Head Insertion

A

Tuberosity of radius and fascia of forearm via bicipital aponeurosis

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24
Q

Biceps Brachii - Short Head Innervation

A

Musculocutaneous nerve (C5,C6,C7)

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25
Q

Biceps Brachii - Short Head Action

A

Supinates forearm and, when it is supinated, flexes elbow, short head resists dislocation of shoulder

26
Q

Biceps Brachii - Long Head Origin

A

Supraglenoid tubercle of scapula

27
Q

Biceps Brachii - Long Head Insertion

A

Tuberosity of radius and fascia of forearm via bicipital aponeurosis

28
Q

Biceps Brachii - Long Head Innervation

A

Musculocutaneous nerve (C5,C6,C7)

29
Q

Biceps Brachii - Long Head Action

A

Supinates forearm and, when it is supinated, flexes elbow

30
Q

Brachialis Origin

A

Distal half of anterior surface of humerus

31
Q

Brachialis Insertion

A

Coronoid process and tuberosity ulna

32
Q

Brachialis Innervation

A

Musculocutaneous nerve (C5,C6) and radial nerve(C5,C7)

33
Q

Brachialis Action

A

Flexes forearm in all positions

34
Q

Triceps Brachii - Long Head Origin

A

Infraglenoid tubercle of scapula

35
Q

Triceps Brachii - Long Head Insertion

A

Proximal end of olecranon of ulna and fascia of forearm

36
Q

Triceps Brachii - Long Head Innervation

A

Radial nerve (C6,C7,C8)

37
Q

Triceps Brachii - Long Head Action

A

Chief extensor of forearm; long head resists dislocation of humerus; especially important during adduction

38
Q

Triceps Brachii - Lateral Head Origin

A

Posterior surface of humerus, superior to radial groove

39
Q

Triceps Brachii - Lateral Head Insertion

A

Proximal end of olecranon of ulna and fascia of forearm

40
Q

Triceps Brachii - Lateral Head Innervation

A

Radial nerve (C6,C7,C8)

41
Q

Triceps Brachii - Lateral Head Action

A

Chief extensor of forearm; long head resists dislocation of humerus; especially important during adduction

42
Q

Triceps Brachii - Medial Head Origin

A

Posterior surface of humerus, inferior to radial groove

43
Q

Triceps Brachii - Medial Head Insertion

A

Proximal end of olecranon of ulna and fascia of forearm

44
Q

Triceps Brachii - Medial Head Innervation

A

Radial nerve (C6,C7,C8)

45
Q

Triceps Brachii - Medial Head Action

A

Chief extensor of forearm; long head resists dislocation of humerus; especially important during adduction

46
Q

Anconeus Origin

A

Lateral epicondyle of humerus

47
Q

Anconeus Insertion

A

Lateral surface of olecranon and superior part of posterior surface of ulna

48
Q

Anconeus Innervation

A

Radial nerve (C7,C8,T1)

49
Q

Anconeus Action

A

Assists triceps in extending forearm; stabilizes elbow joint; may abduct ulna during pronation

50
Q

costoclavicular impression is at what end of clavicle

A

sternal

51
Q

humeral condyle is made up by blank and blank

A

capitulum, trochlea

52
Q

capitulum is blank

A

lateral

53
Q

trochlea is blank

A

medial

54
Q

radial fossa is blank

A

lateral

55
Q

coronoid fossa is blank

A

medial

56
Q

axillary artery becomes blank artery

A

brachial

57
Q

terminal branches of brachial plexus are all blank innervation

A

cutaneous

58
Q

Pectoralis minor origin

A

3-5 ribs near costal cartilages

59
Q

Pectoralis minor insertion

A

Medial and superior surface of coracoid process

60
Q

Pectoralis minor innervation

A

Medial pectoral nerve (C8, T1)

61
Q

Pectoralis minor action

A

Stabilize scapula by drawing it inferiorly and anteriorly on thoracic wall

62
Q

Subclavius action

A

Anchors and depresses clavicle

pt gross (17 decks)

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