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OS 203 Finals > Shoulder and Arms > Flashcards

Shoulder and Arms Flashcards

0
Q

T/F the subacromial and scapulothoracic joints are true joints

A

F

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1
Q

Joint along the axial skeleton with the least movement

A

vertebrocostal

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2
Q

The only skeleton that connects the upper limb to the axial skeleton

A

clavicle

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3
Q

The sternoclavicular joint is formed by the

A

sternal end of the clavicle and the manubrium of the sternum

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4
Q

The acromioclavicular joint is formed by the

A

acromion of the scapula and the acromial end of the clavicle

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5
Q

the coracoclavicular ligament is attached to what part of the clavicle?

A

conoid tubercle

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6
Q

this structure deepens the glenoid fossa by 2.5cm

A

glenoid labrum

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7
Q

[origin] short head of biceps

A

coracoid process of the scapula

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8
Q

Which among the gleno-huneral ligament is the strongest?

A

middle glenohumeral ligament

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9
Q

T/F the deltoid does no work at the first 30 degrees of arm elevation

A

T; the supraspinatus does the work. the deltoids only work from 30-100 degrees

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10
Q

The scapula is oriented

A

anterolaterally

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11
Q

T/F the acromion is continuous with the spine of the scapula

A

T

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12
Q

T/F the deltoid has an attahment to the scapula

A

T; deltoid tubercle at the spine

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13
Q

Muscle that attaches to the acromion

A

trapezius

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14
Q

[origin] subscapular muscle

A

subscapular fossa

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15
Q

Which among the borders of the scapula is thinnest/broadest?

A

superior border

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16
Q

what runs in the deltopectoral groove?

A

cephalic vein

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17
Q

[action] descending fibers of the trapezius

A

Elevate the scapula

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18
Q

[action] middle fibers of the trapezius

A

retracts scapula

19
Q

[action] ascending fibers of the trapezius

A

depresses the scapula

20
Q

[action] levator scapulae

A

elevates scapula

rotates scapula together with rhomboids and pectralis minor

21
Q

Rhomboids Major and Minor

A

(RRR)

retract and rotate scapula

22
Q

[action] serratus anterior

A

protracts scapula (e.g. when punching) elevates glenoid cavity

23
Q

[action] deltoid

A

abducts arm (30-100 degrees) prevent inferior displacement of humerus

24
Q

[action] rotator cuff

A

supraspinatus - abducts scapula
infraspinatus - laterally rotates the scalula
teres minor - laterally rotates the scapula
subscapularis - medially rotates the scapula

25
Q

[action] latissimus dorsi

A

adducts and rotates humerus

26
Q

[action] teres major

A

adducts and medially rotates humerus

27
Q

[action] pectoralis major

A

medially rotates arm

28
Q

[action] pectoralis minor

A

stabilizes scapula, elevates ribs

29
Q

[action] subclavius

A

depresses clavicle

30
Q

what does the circumflex scapular artery supply?

A

infraspinatus, supraspinatus, subscapularis

31
Q

Congenital absence of the clavicle

A

cleidocranial dystosis/aplasia

32
Q

Sprengel’s deformity

A

high scapula or congenital high scapula

33
Q

common site of fracture in the humerus

A

surgical neck

34
Q

what portion of the humerus articulates with the head of the radius?

A

capitulum

35
Q

what part if the humerus articulates with the ulna?

A

trochlea

36
Q

T/F arm flexors are stronger than arm extensors

A

T

37
Q

What muscle is the main flexor of the forearm?

A

brachialis

38
Q

The main extensor of the forearm is the

A

medial head of the triceps

39
Q

[type of joint] humeroulnar

A

ginglymus

40
Q

[type of joint] humeroradial

A

condyloid

41
Q

[type of joint] radioulnar

A

condyloid

42
Q

[innervation] triceps

A

radial nerve

43
Q

the musculocutaneous nerve innervates

A

biceps, brachialis, coracobrachialis

44
Q

which carpal bone is most frequently injured?

A

scaphoid

45
Q

what does the axillary nerve innervate?

A

teres minor, deltoids

OS 203 Finals (9 decks)

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