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PA Summer 1 > anatomy upper limb > Flashcards

anatomy upper limb Flashcards

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1
Q

what are the rotator cuff muscles?

A

supraspinatus, infraspinatous, teres minor, subscapularis

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2
Q

what passes attaches to the margin of the glenoid cavity deepening the cavity?

A

Glenoid labrum

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3
Q

what attaches to supraglenoid tubercle and passes through the articular cavity superior to the head of the humerus?

A

Tendon of long head of biceps brachii

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4
Q

what does the musculotendinous collar provide?

A

joint stability without compromising ROM

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5
Q

deltoid origin and insertion?

A

O: spine of scapula, acromion, and lateral clavicle.
I: deltoid tuberosity of humerus

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6
Q

what innervates the deltoid? whats the function?

A

Axillary nerve; abduction of arm beyond initial 15 degrees

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7
Q

the posterior region of the scapula contains 5 muscles, what are they?

A

Supraspinatus, infraspinatus, teres major, teres minor, and long head of biceps brachii

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8
Q

supraspinatus origin and insertion?

A

O: medial 2/3 of supraspinous fossa
I: greater tubercle of humerus

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9
Q

Supraspinatus innervation? Function?

A

suprascapular nerve; initiation of abduction to 15 degrees

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10
Q

Infraspinatus origin and insertion?

A

O: medial 2/3 of infraspinous fossa
I: greater tubercle of humerus

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11
Q

Innervation of infraspinatus? function?

A

suprascapular nerve; lateral roation of arm

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12
Q

teres minor origin and insertion?

A

O: posterior surface of scapula adjacent to lateral border
I: greater tubercle of humerus

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13
Q

Innervation of teres minor? function?

A

axillary nerve; lateral rotation of arm

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14
Q

teres major origin and insertion?

A

O: inferior angle of scapula
I: Intertubercular sulcus of humerus

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15
Q

Innervation of teres major? Function?

A

lower subscapular nerve; medial roation, adduction, and extension of arm.

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16
Q

what is the suprascapular foramen formed by?

A

suprascapular notch and superior transverse scapular ligament

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17
Q

what passes through the suprascapular foramen?

A

suprascapular nerve

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18
Q

what is the quadrangular space formed by?

A

inferior margin of teres minor, surgical neck of humerus, superior margin of teres minor, lateral margin of long head of triceps brachii

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19
Q

What passes through the quadangular space?

A

axillary nerve, posterior circumflex humeral artery and vein.

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20
Q

what forms the triangular space?

A

median margin of long head of triceps brachii, superior margin of teres major, and inferior margin of teres minor

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21
Q

what passes through the triangular space?

A

circumflex scapular artery and vein

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22
Q

what forms the triangular interval?

A

lateral margin of long head of triceps brachii, shaft of humerus, and inferior margin of teres major

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23
Q

What passes through the triangular interval?

A

radial nerve and profunda brachii artery

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24
Q

what supplies the supraspinatus and infraspinatus muscles with blood?

A

suprascapular artery

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25
Q

where does the posterior circumflex artery originate? what does it supply?

A

the 3rd part of axillary artery; supplies related muscles and glenohumeral joint.

26
Q

where does the circumflex artery originate? what’s it supply?

A

branch of subscapular artery which originates from 3rd part of axillary artery; supplies related muscles in scapular region.

27
Q

the axillary vein becomes what when it crosses the lateral margin of the first rib?

A

subclavian vein

28
Q

what is the origin and insertion of pectoralis major?

A

O: clavicular head originates on medial half of clavicle and sternocostal head originates from medial part of anterior thoracic wall
I: humerus

29
Q

what innervates the pectoralis major? function?

A

lateral and medial pectoral nerve which originates from brachial plexus; flexion, adduction, and medial rotation of arm at glenohumeral joint

30
Q

where is the subclavius muscle located?

A

deep to pec major between the clavicle and first rib

31
Q

what innervates the subclavius muscle?

A

branch from superior trunk of brachial plexus (nerve to the subclavius muscle)

32
Q

where does the pec minor originate and insert?

A

O: anterior surfaces of ribs 1-5
I: coracoid process of scapula

33
Q

pec minor innervation and function?

A

medial pectoral nerve which originates from the brachial plexus; protracts scapula and depresses the lateral angle of scapula

34
Q

serratus anterior origin and insertion?

A

O: lateral surface of ribs 1-9
I: medial border of scapula

35
Q

innervation of serratus anterior? function?

A

long thoracic nerve from the brachial plexus; protraction and rotation of scapula

36
Q

which muscles attach at the intertubercular sulcus?

A

pec major, latissimus dorsi, and teres major

37
Q

subscapularis origin and insertion?

A

O: medial 2/3 of subscapular fossa
I: lesser tubercle of humerus

38
Q

whats the innervation of the subscapularis? function?

A

upper and lower subscapular nerve; medial rotation of arm

39
Q

short head of biceps brachii origin and insertion?

A

O: coracoid process
I: supraglenoid tubercle of scapula

40
Q

Coracobrachialis origin and insertion?

A

O: coracoid process
I: humeral shaft

41
Q

where does the axillary artery become the brachial artery?

A

Inferior margin of teres major muscle

42
Q

what separates the axillary artery into its 3 parts?

A

the pec minor that passes anterior to the axillary artery

43
Q

what artery branches off the 1st part of the axillary artery?

A

superior thoracic artery

44
Q

which arteries branch off the 2nd part of the axillary artery?

A

throaco-acromial artery and the lateral thoracic artery

45
Q

which arteries branch off the 3rd part of the axillary artery?

A

subscapular artery, anterior circumflex humeral artery, and posterior circumflex humeral artery.

46
Q

what does the superior thoracic artery supply?

A

upper regions of medial and anterior axillary walls

47
Q

what does the thoraco-acromial artery supply? what 4 branches does it divide into?

A

supplies anterior axillary wall, divides into pectoral, deltoid, clavicular, and acromial branches.

48
Q

what does the lateral thoracic artery supply?

A

lateral aspect of breast, pectoral muscles, and serratus anterior

49
Q

what does the subscapular artery supply?

A

posterior wall of axilla and posterior scapular region

50
Q

what are the two terminal branches of the subscapular artery? what do they supply?

A

circumflex artery and thoracodorsal artery. supply the latissimus dorsi

51
Q

where does the axillary vein begin?

A

lower margin of teres major

52
Q

what is the axillary vein a continuation of?

A

basilic vein

53
Q

when does the axillary vein become the subclavian vein?

A

when it crosses the lateral border of the first rib

54
Q

what forms the brachial plexus?

A

anterior tami of C5 C6 C7 C8 and T1

55
Q

what does the dorsal scapular nerve innervate?

A

rhomboid major and minor and part of levator scap

56
Q

what innervates the serratus anterior?

A

long thoracic nerve

57
Q

what are the 5 groups of axillary lymph nodes?

A

humeral, pectoral, subscapular, central, apical

58
Q

where are the lymph nodes of the humeral lymph nodes found?

A

upper limb

59
Q

where are the lymph nodes of the pectoral lymph nodes found?

A

abdominal wall, chest, mammary gland

60
Q

where are the apical lymph nodes found?

A

most superior, they drain all other groups of nodes in the region.

61
Q

the efferent vessels from the apical group of lymph nodes converge to form what?

A

subclavian trunk

PA Summer 1 (4 decks)

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