MSK Flashcards

1
Q

anterior wall of the axilla is formed by the

A

pectoralis major and the pectoralis minor muscle

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2
Q

posterior wall of the axilla is formed by the

A

latissimus dorsi muscle

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3
Q

medial wall of the axilla is formed by the

A

thoracic wall, and serratus anterior muscle

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4
Q

lateral wall of the axilla is formed by the

A

intertubercular sulcus of the humerus

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5
Q

the axillary artery is a continuation of which artery

A

subclavian

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6
Q

at what anatomical point does the axillary artery start

A

lateral border of the 1st rib

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7
Q

at what anatomical point does the axillary artery become the brachial

A

inferior border of the teres major

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8
Q

what nerve roots form the upper trunk

A

C5-T1

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9
Q

Erb’s point is

A

C5, C6

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10
Q

the lower trunk of the brachial plexus consists of

A

C8-T1

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11
Q

injury to the lower trunk of the brachial plexus is called

A

Klumpke’s palsy

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12
Q

muscles affected by Klumpke’s palsy are

A

intrinsic muscles of the hand and ulnar, flexors of the wrist and fingers

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13
Q

branches of the lateral cord of the brachial plexus

A

lateral pectoral, lateral root of median nerve, musculocutaneous

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14
Q

branches of medial cord of brachial plexus

A

medial pectoral, ulnar, medial cutaneous of arm, medial cutaneous of forearm, medial root of median nerve

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15
Q

branches of the posterior cord of the brachial plexus are

A

thoracodorsal nerve, axillary nerve radial nerve, subscapular nerve

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16
Q

which vein in the dorsal venous arch is more lateral

A

cephalic

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17
Q

which vein in the dorsal venous arch is more medial

A

basilic

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18
Q

median cubital vein does what

A

shunts blood form the cephalic vein to the basilic

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19
Q

axillary lymph node groups are

A
anterior pectoral
posterior subscapular
apical
central
lateral
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20
Q

which part of the clavicle is the weakest?

A

middle third

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21
Q

the acromioclavicular joint is what sort of joint?

A

gliding/plane

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22
Q

the sternoclavicular joint is what sort of joint?

A

saddle

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23
Q

which joint links the proximal upper limb to the vertical body

A

sternoclavicular

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24
Q

describe the scapula-humeral rhythm

A

beyond the first 30 degrees for every 3 degrees of abduction there are 2 degrees at the shoulder joint and 1 degree at the scapula thoracic joint

25
Q

elevation of the scapula is stimulated by

A

levator scapulae

trapezius descending fibres

26
Q

depression of the scapula is stimulated by the

A

inferior trapezius

27
Q

protraction of the scapula is stimulate by the

A

serratus anterior

28
Q

retraction of the scapula is stimulated by the

A

trapezius middle fibres and rhomboids

29
Q

lateral upwards rotation and elevation of the glenoid cavity is by the

A

trapezius ascending and descending

30
Q

medial downward rotation depressing the glenoid cavity is by the

A

gravity, levator scapulae, the rhomboids, and pectoralis minor

31
Q

the rim of the glenohumeral joint contains a cartilage called

A

fibrocartilaginous glenoid labrum

32
Q

function of the glenoid labrum

A

to increase the depth for the humeral head attachment

33
Q

glenohumeral ligament strengthens which aspect of the glenohumeral joint

A

anterior

34
Q

the coraco-acromial arch consists of the

A

acromion and the coracoid process of the scapula and the acromial arch ligament

35
Q

which part of the glenohumeral joint is the weakest

A

inferiorly

36
Q

which bursae communicates with the bursae

A

subscapular

37
Q

subacromial bursae function is

A

facilitates movement of the supraspinatous tendon

38
Q

anterior fibres of the deltoid are to what on the shoulder

A

part flexion and medially rotate the shoulder joint

39
Q

middle fibres of the deltoid do what to the shoulder

A

abduct

40
Q

the posterior fibres of the deltoid do what to the shoulder

A

extend and laterally rotate the shoulder

41
Q

deltoid nerve supply is the

A

axillary

42
Q

sensation of the axillar nerve may be tested where?

A

badge area

43
Q

the pectoralis major muscle does what to the shoulder

A

adducts and medially rotates the humerus at the glenohumeral joint

44
Q

the triangular space below the clavicle between the deltoid and pectoralis major muscle is the deltopectoral triangle, what vein is found here?

A

cephalic vein

45
Q

serratus anterior nerve supply is the

A

long thoracic nerve

46
Q

damage to the long thoracic nerve yields

A

a winged scapula

47
Q

superior fibres of the trapezius do what to

A

elevate the scapula

48
Q

middle fibres of the trapezius do what

A

retract the scapula

49
Q

inferior fibres of the trapezius do what

A

depress the scapula

50
Q

trapezius innervation is the

A

spinal accessory nerve

51
Q

what does the teres major do to the shoulder

A

adducts and medially rotates

52
Q

the latissimus dorsi do to the shoulder

A

medially rotates the shoulder joint

53
Q

shoulder joint flexion is by the

A

anterior deltoid

54
Q

shoulder joint extension is by the

A

posterior deltoid

55
Q

shoulder joint adduction is by the

A

teres major and subscapularis

56
Q

shoulder joint abduction is by the

A

middle part of the deltoid and supra spinatous

57
Q

shoulder medial or internal rotation is by the

A

subscapularis
latissimus dorsi
pectorals major
teres major

58
Q

shoulder lateral or external rotation is by the

A

teres minor and infraspinatus

deltoid posterior