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Muscles > Shoulder > Flashcards

Shoulder Flashcards

1
Q

upper trapezius origin

A

external occipital protuberance, medial half of the superior nuchal line, ligamentum nuchae, spinous process of 7th cervical vertebrae

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2
Q

upper trapezius insertion

A

lateral 1/3 of the clavicle

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3
Q

upper trapezius nerve supply

A

spinal portion of the accessory nerve (CN XI), ventral rami of C3, C4 Nerve root: C1-5

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4
Q

upper trapezius function

A

scapular elevation; upward rotation of the scapula (in conjunction with the inferior fibers)

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5
Q

levator scapulae origin

A

transverse processes of the upper 4 cervical vertebrae

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6
Q

levator scapulae insertion

A

vertebral border of the scapula, between the superior angle and the root of the scapular spine

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7
Q

levator scapulae nerve supply

A

dorsal scapular nerve C3, C4 Nerve root: C3, C4, C5

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8
Q

levator scapulae function

A

scapular elevation, adduction, downward rotation

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9
Q

middle trapezius origin

A

spinous processes for T1-T5 and intervening supraspinal ligament

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10
Q

middle trapezius insertion

A

medial border of the acromion process and the spine of the scapula

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11
Q

middle trapezius nerve supply

A

spinal portion of the accessory nerve (CN XI); ventral rami of C3, C4 Nerve root: C1-C5

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12
Q

middle trapezius function

A

scapular adduction

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13
Q

lower trapezius origin

A

spinous process of T6-T12 and intervening supraspinous ligament

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14
Q

lower trapezius insertion

A

tubercle on the medial end of the scapular spine

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15
Q

lower trapezius nerve supply

A

spinal portion of the accessory nerve (CN XI); ventral rami of C3, C4. Nerve root: C1-C5

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16
Q

lower trapezius function

A

scapular depression, upward rotation of the scapula (in conjunction with the superior fibers)

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17
Q

rhomboid major origin

A

spinous process of T2-T5 and intervening supraspinous ligament

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18
Q

rhomboid major insertion

A

vertebral border of the scapula between the spine and inferior angle

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19
Q

rhomboid major nerve supply

A

dorsal scapular n. C5

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20
Q

rhomboid major function

A

adduction, downward rotation, and elevation of the scapula

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21
Q

rhomboid minor origin

A

spinous process of C7 and T1 and the inferior aspect of the ligamentum nuchae

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22
Q

rhomboid minor insertion

A

base of the spine of the scapula

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23
Q

rhomboid minor nerve supply

A

dorsal scapular n. C5

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24
Q

rhomboid minor function

A

adduction and elevation of the scapula

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25
Q

serratus anterior origin

A

anterosuperior aspect of the upper 8 or 9 ribs

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26
Q

serratus anterior insertion

A

anterior surface of the vertebral border of the scapula

27
Q

serratus anterior nerve supply

A

long thoracic n. C5-C7

28
Q

serratus anterior function

A

scapula ABduction, upward rotation of the scapula (inferior fibers)

29
Q

latissimus dorsi origin

A

spinous process of sacral, lumbar, and lower 6 thoracic vertebrae and the supraspinal ligament via the thoracolumbar fascia, iliac crest, and lower 3-4 ribs

30
Q

latissimus dorsi insertion

A

floor of the intertubercular groove of the humerus

31
Q

latissimus dorsi nerve supply

A

thoracodorsal n. C6-C8

32
Q

latissimus dorsi function

A

extension, adduction, and medial rotation of the shoulder

33
Q

teres major origin

A

posterior surface of the inferior angle of the scapula

34
Q

teres major insertion

A

medial lip of the intertubercular groove of the humerus

35
Q

teres major nerve supply

A

lower subscapular n. C5, C6

36
Q

teres major function

A

adduction, extension, and medial rotation of the shoulder

37
Q

posterior deltoid origin

A

inferior aspect of the spine of the scapula

38
Q

posterior deltoid insertion

A

deltoid tuberosity of the humerus

39
Q

posterior deltoid nerve supply

A

axillary n. C5, C6

40
Q

posterior deltoid function

A

extension of the shoulder

41
Q

middle deltoid origin

A

acromion process of the scapula

42
Q

middle deltoid insertion

A

deltoid tuberosity of the humerus

43
Q

middle deltoid nerve supply

A

axillary n. C5, C6

44
Q

middle deltoid function

A

abduction of the shoulder

45
Q

supraspinatus origin

A

supraspinatus fossa of the scapula

46
Q

supraspinatus insertion

A

greater tubercle of the humerus

47
Q

supraspinatus nerve supply

A

suprascapular n. C5-8, T1

48
Q

supraspinatus function

A

ABduction and lateral rotation of the shoulder

49
Q

pectoralis major origin

A

clacicular portion: anterior surface of the medial half of the clavical. sternocostal portion: anterior surface of the sternum, cartilage of ribs 1-7, aponeurosis of the external abdominal oblique.

50
Q

pectoralis major insertion

A

lateral lip of the intertubercular groove of the humerus

51
Q

pectoralis major nerve supply

A

medial and lateral pectoral n. C5-8, T1

52
Q

pectoralis major function

A

ADDuction and medial rotation of the shoulder. Clavicular portion: flexion and horizontal ADDuction of the shoulder. Sternocostal portion: extension of the shoulder from a flexed position.

53
Q

subscapularis origin

A

subscapular fossa of the scapula

54
Q

subscapularis insertion

A

lesser tubercle of the humerus

55
Q

subscapularis nerve supply

A

upper and lower subscapular n. C5, C6

56
Q

subscapularis function

A

medial rotation of the shoulder

57
Q

infraspinatus origin

A

intraspinatus fossa of the scapula

58
Q

infraspinatus insertion

A

greater tubercle of the humerus

59
Q

infraspinatus nerve supply

A

suprascapular n. C5, C6

60
Q

infraspinatus function

A

lateral rotation of the shoulder

61
Q

teres minor origin

A

superior 2/3 of the posterior surface of the axillary border of the scapula

62
Q

teres minor insertion

A

greater tubercle of the humerus

63
Q

teres minor nerve supply

A

axillary n. C5

64
Q

teres minor function

A

lateral rotation of the shoulder

Muscles (8 decks)

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