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Rotator Cuff and arm Flashcards

0
Q

Insertion of deltoid

A

Deltoid tuberosity of humerus

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1
Q

Origin of deltoid

A

Spine of scapula, acromion, lateral end of clavicle

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2
Q

Innervation of deltoid

A

Axillary nerve C5,C6

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3
Q

Action of deltoid

A

Anterior: flexes and medially rotates shoulder joint
Middle: abducts shoulder joint
Posterior: extens and laterally rotates shoulder joint

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4
Q

Origin of supraspinatus

A

Supraspinous fossa of scapula

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5
Q

Insertion of supraspinatus

A

Superior facet of greater tubercle

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6
Q

Innervation of supraspinatus

A

Suprascapular nerve C4,C5,C6

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7
Q

Action of supraspinatus

A

Initiates and assists deltoid in abduction of shoulder joint

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8
Q

Origin of infraspinatus

A

Infraspinatus fossa of scapula

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9
Q

Insertion of infrapsinatus

A

Middle facet of greater tubersity

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10
Q

Innervation of infraspinatus

A

Suprascapular C5 C6

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11
Q

Action of infraspinatus

A

Laterally rotates shoulder joint and helps hold humerus head and glenoid cavity of scapula

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12
Q

Origin of teres minor

A

Middle part of lateral border of scapula

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13
Q

Insertion of teres minor

A

Inferior facet of greater tuberosity

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14
Q

Innervation of teres minor

A

Axillary nerve C5 C6

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15
Q

Action of teres minor

A

Laterally rotate shoulder joint and helps hold humeral head in glenoid cavity of scapula

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16
Q

Origin of teres major

A

Inferior part of lateral border of scapula and posterior surface of inferior angle of scapula

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17
Q

Insertion of teres major

A

Medial lip of intertubercular sulcus of humerus

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18
Q

Innervation of teres major

A

Lower subscapular nerve C5 C6

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19
Q

Action of teres major

A

Adducts and medially rotates shoulder joint

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20
Q

Origin of subscapularis

A

Subscapular fossa

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21
Q

Insertion of subscapularis

A

Lesser tubercle of humerus

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22
Q

Innervation of subscapularis

A

Upper and lower subscapular nerve C5, C6, C7

23
Q

Action of subscapularis

A

Medially rotates and adducts shoulder joint, helds head of humerus of cavity

24
Q

Origin of the pectoralis major

A

Clavicular head : anterior surface of medial half of clavicle
Sternocostal head: anterior surface of sternum, superior six costal cartilages, aponeurosis of external oblique muscle

25
Q

Insertion of pectoralis major

A

Lateral lip of intertubercle groove

26
Q

Innervation of pectoralis major

A

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

27
Q

Actions of pectoralis major

A

Adducts and medially rotates shoulder joint, draws scapula anteriorly and inferiorly

28
Q

Origin of pectoralis minor

A

3-5th ribs near costal cartilage

29
Q

Insertion of pectoralis minor

A

Medial border and superior surface of coracoud process of scapula

30
Q

Innervation of pectoralis minor

A

Medial pectoralis nerve C8, T1

31
Q

Actions of pectoralis minor

A

Stabilizies scapula by drawing inferiorly and anteriorly against thoracic wall

32
Q

Origin of subclavious

A

Junction of 1st rib and cartilage

33
Q

Insertion of subclavius

A

Inferior surface of middle third of clavicle

34
Q

Innervation of subclavius

A

Subclavian nerve C5 and C6

35
Q

Action of subclavius

A

Anchors and depresses clavicle

36
Q

Origin of serratus anterior

A

External surface of lateral parts of 1st

-8th rib

37
Q

Insertion of serratus anterior

A

Anterior surface of medial border of scapula

38
Q

Innervation of serratus anterior

A

Long thoracic nerve C5, C6, C7

39
Q

Action of serratus anterior

A

Protracts scapula and holds against thoracic wall and rotates scapula

40
Q

Origin of biceps brachii

A

Short head: tip of coracoid process of scapula

Long head: supraglenoid tubercle of scapula

41
Q

Insertion of biceps brachii

A

Tuberosity of radius and fascia of forearm via bicipital aponeurosis

42
Q

Innervation of biceps brachii

A

Musculocutaneous nerve C5 and C6

43
Q

Action of biceps brachii

A

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

44
Q

Origin of brachialis

A

Distal half of anterior surface of humerus

45
Q

Insertion of brachialis

A

Coronoid process and tuberosity of ulna

46
Q

Innervation of brachialis

A

Musculocutaneous C5 and C6

47
Q

Action of brachialis

A

Flexes elbow joint in all positions

48
Q

Origin of coracobrachialis

A

Tip of coracoid process of scapula

49
Q

Insertion or coracobrachialis

A

Middle third of medial surface of humerus

50
Q

Innervation of coracobrachialis

A

Musculocutaneous nerve C5,6,7

51
Q

Action of coracobrachialis

A

Helps flex and adduct shoulder joint, resists dislocation of shoulder

52
Q

Origin of tricpeps brachii

A

Long head: infraglenoid tubercle of scapula
Lateral head: posterior surface of humerus, superior to radial groove
Medial head: posterior surface of humerus, inferior to radial groove

53
Q

Insertion of triceps brachii

A

Proximal end of olecranon of ulna and forearm fascia

54
Q

Innervation of triceps brachii

A

Radial nerve C6,7,8

55
Q

Action of triceps brachii

A

Cheif extensor of elbow joint, long head extends shoulder joint and resists dislocation of humerus

gross (13 decks)

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