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MSK AM > Shoulder muscles > Flashcards

Shoulder muscles Flashcards

1
Q

What are the actions of the trapezius?

A

Elevation
Depression
Retraction
Lateral rotation

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2
Q

What is the blood supply of the trapezius?

A

CErvical artery

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3
Q

What is the innervation of the trapezius?

A

Accessory nerve- CN XI

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4
Q

What are the attachments of the trapezius?

A

Skull, nuchal ligament, C7-T12

Clavicle, acromion, spine of scapula

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5
Q

What are the actions of the latissimus dorsi?

A

Extension
Adduction
Medial rotation

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6
Q

What is the blood supply of the latissimus dorsi?

A

Subscapular artery

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7
Q

What is the innervation of the latissimus dorsi?

A

Thorcodorsal nerve

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8
Q

What are the attachments of the latissimus dorsi?

A

T6-12, iliac crest, thoracolumbar fascia, inferior 3 ribs

Intertubercular sulcus of humerus

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9
Q

What are the actions of the rhomboid major?

A

Elevation

Adduction

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10
Q

What is the blood supply of th rhomboid major?

A

Dorsal scapular artery

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11
Q

What is the innervation of the rhomboid major?

A

Dorsal scapular nerve

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12
Q

What is the attachment of the rhomboid major?

A

T2-5

Medial border of scapula

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13
Q

What is the action of the rhomboid minor?

A

Elevation
Retraction
Medial rotation

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14
Q

What is the blood supply of the rhomboid minor?

A

Transverse cervical artery

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15
Q

What is the innervation of the rhomboid minor?

A

Dorsal scapular nerve

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16
Q

What are the attachments of the rhomboid minor?

A

C7-T1

Medial border of scapula

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17
Q

What are the actions of the levator scapulae?

A

Elevation

Medial rotation

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18
Q

What is the blood supply of the levator scapulae?

A

Dorsal scapular artery

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19
Q

What is the innervation of the leaver scapulae?

A

Dorsal scapular artery

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20
Q

What are the attachments of the levator scapulae?

A

C1-4 transverse proceses

Medial border of scapula

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21
Q

What are the actions of the pectorals major?

A

Flexion

Adduction

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22
Q

What is the blood supply of the pectorals major?

A

Pectoral branch

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23
Q

What is the innervation of the pectorals major?

A

Pectoral nerves

24
Q

What are the attachments of the pectoralis major?

A

Clvicle, sternum, superior 6 costs cartilages, aponeurosis of external oblique
Bicipital groove of humerus

25
Q

What is the action of the pectoralis minor?

A

Medial rotation

26
Q

What is the innervation of the pectoralis minor?

A

Medial pectoral nerve

27
Q

What are the attachments of the pectoralis minor?

A

Ribs 3-5

Coracoid process of scapula

28
Q

What are the actions of the serratus anterior?

A

Protraction

Depression

29
Q

What is the blood supply of the serratus anterior?

A

Thoracic arteries

Thoracodorsal arteries

30
Q

What is the innervation of the serratus anterior?

A

Long thoracic nerve

31
Q

What are the attachments of the serratus anterior?

A

Ribs 1-8

Medial border of scapula

32
Q

What are the actions of the anterior deltoid?

A

Flexion

Medial rotation

33
Q

What are the actions of the middle deltoid?

A

Abduction

34
Q

What are the actions of the posterior deltoid?

A

Extension

35
Q

What is the blood supply of the deltoid?

A

Thoracoacromial artery

Humeral circumflex arteries

36
Q

What is the innervation of the deltoid?

A

Axillary nerve

37
Q

What are the attachments of the deltoid?

A

Scapula and clavicle

Deltoid tuberosity of humerus

38
Q

What are the actions of the teres major?

A

Adduction

Medial rotation

39
Q

What s the blood supply of the teres major?

A

Subscapular and circumflex scapular arteries

40
Q

What is the innervation of the teres major?

A

Lower sub scapular nerve

41
Q

What are the attachments of the teres major?

A

Posterior surface of inferior angle of scapula

Intertubercular groove of humerus

42
Q

What are the actions of the teres minor?

A

Lateral rotation

43
Q

What is the blood supply of the teres minor?

A

Circumflex humeral and circumflex scapular arteries

44
Q

What is the innervation of the teres minor?

A

Axillary nerve

45
Q

What are the attachments of the teres minor?

A

Posterior surface of scapula

Lesser tubercle of humerus

46
Q

What are the actions of the subscapularis?

A

Stabilise joint

Medial rotation

47
Q

What is the blood supply of the subscapularis?

A

Subscapular arteru

48
Q

What is the innervation of the subscapularis?

A

Subscapular nerves

49
Q

What are the attachments of the subscapularis?

A

Subscapular fossa

Lesser tubercle of humerus

50
Q

What are the actions of the supraspinatous?

A

Stabilise shoulder

First 15 degrees abduction

51
Q

What is the innervation of the supraspinatous?

A

Suprascapular artery

52
Q

What is the innervation of the supraspinatus?

A

Suprascapular nerve

53
Q

What are the attachments of the supraspinatus?

A

Supraspinatous fossa

Greater tubercle of humerus

54
Q

What are the actions of the infraspinatus?

A

Stabilise joint

Lateral rotation

55
Q

What is the blood supply of the infraspinatus?

A

Suprascapular artery

Circumflex scapular artery

56
Q

What is the innervation of the infraspinatous?

A

Suprascapular nerve

57
Q

What is the attachment of the infraspinatus?

A

Infraspinatus fossa

Greater tubercle of humerus

MSK AM (37 decks)

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