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Anatomy > Scapular Region and Shoulder > Flashcards

Scapular Region and Shoulder Flashcards

1
Q

deltoid origin

A

lateral ⅓ clavicle, acromion, spine of scapula

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2
Q

deltoid insertion

A

deltoid tuberosity of humerus

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3
Q

deltoid innervation

A

axillary (C5,6)

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4
Q

deltoid actions

A

anterior: flex and medially rotate humerus
middle: abduct humerus
posterior: extend and laterally rotate humerus

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5
Q

teres major origin

A

dorsal surface of inferior angle of scapula

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6
Q

teres major insertion

A

medial lip of intertubercular groove of humerus

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7
Q

teres major innervation

A

lower subscapular (C5,6)

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8
Q

teres major action

A

medially rotate and adduct humerus

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9
Q

supraspinatus origin

A

supraspinous fossa of scapula

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10
Q

supraspinatus insertion

A

superior facet on greater tubercle of humerus

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11
Q

supraspinatus innervation

A

suprascapular (C4,5,6)

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12
Q

supraspinatus action

A

initiates and assists deltoid in abduction of glenohumeral joint and acts with rotator cuff muscles

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13
Q

infraspinatus origin

A

infraspinous fossa of scapula

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14
Q

infraspinatus insertion

A

middle facet on greater tuberosity of humerus

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15
Q

infraspinatus innervation

A

suprascapular (C5,6)

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16
Q

infraspinatus action

A

laterally rotate glenohumeral joint and help hold humeral head in glenoid cavity of scapula

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17
Q

teres minor origin

A

superior part of lateral border of scapula

18
Q

teres minor insertion

A

inferior facet on greater tuberosity of humerus

19
Q

teres minor innervation

A

axillary (C5,6)

20
Q

teres minor action

A

laterally rotate glenohumeral joint; help hold humeral head in glenoid cavity of scapula

21
Q

subscapularis origin

A

subscapular foss of scapula

22
Q

subscapularis insertion

A

lesser tuberosity of humerus

23
Q

subscapularis innervation

A

upper and lower subscapular nerves (C5,6,7)

24
Q

subscapularis action

A

medially rotate glenohumeral joint and adduct it; help hold humeral head in glenoid cavity

25
Q

what muscles does the axillary nerve innervate?

A

teres minor; deltoid

26
Q

how many muscles have attachment on the scapula?

A

26

27
Q

what are the actions of the omohyoid?

A

depress hyoid bone; does not have action on the scapula

28
Q

a patient who was recently in a car accident complains of shoulder pain when he brings his arm across his chest. you deduce that the pain is due to stretching of the lateral rotators of the shoulder. what muscle is most likely the source of pain?

A

infraspinatus

29
Q

a woman is playing a strenuous game of tennis and suddenly complains of severe pain at the shoulder. she cannot initiate abduction of the humerus at the GHJ. if the arm is passively elevated about 40˚, she is able to fully bring the arm overhead. what muscle has been injured?

A

supraspinatus

30
Q

what are the attachments of the deltoid?

A

clavicle, acromion, spine of scap, humerus

31
Q

what muscles make up the rotator cuff?

A

infraspinatus, supraspinatus, subscapularis, teres minor

32
Q

what muscle is the strongest medial rotator of the arm?

A

subscapularis

33
Q

an older patient complains of shoulder pain and difficulty abducting his arm. an arthroscpe with dye is done and the radiologist notes that the dye has leaked from the shoulder joint into the subacromial bursa. what tendon would be ruptured for this to occur?

A

supraspinatous

34
Q

omohyoid attachment

A

superior border near suprascaular notch

35
Q

what are the external rotators of the shoulder?

A

teres minor, infraspinatus

36
Q

what are the internal rotators of the shoulder?

A

latissimus dorsi, teres major, subscapularis, pec major,

37
Q

apley scratch test

A

(over head) external rotation, extension, abduction
(reach across) internal rotation and adduction
(reach behind) internal rotation and adduction

38
Q

drop arm test

A

supraspinatus and deltoid

39
Q

apprehension test

A

GHJ dislocation

40
Q

yergason test

A

biceps tendon; transverse humeral ligament
Resisted Ext Rotation & Flexion of the Biceps
Forearm Flexed @ Elbow

41
Q

roos test

A

numbness, tingling
blue–venous
white–arterial compression

42
Q

adson test

A

external rotation and extension of humerus
patient’s head turned towards that side
take radial pulse

Anatomy (16 decks)

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