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Biomechanics > Muscle chart quiz 1 > Flashcards

Muscle chart quiz 1 Flashcards

first 2 pages, upper extremity, deltoids and trap guaranteed

1
Q

trapezius origin

A

occipital protuberance, spinous process C2-T12

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2
Q

trapezius insertion

A
  • upper: lateral clavicle, acromion
  • middle: spine of scapula
  • lower: spine of scapular vertebral border
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3
Q

trapezius action

A
  • upper: scapular elevation, upward rotation and retraction, cervical extension, side bend (same), cervical rotation opposite side
  • middle: scapular retraction
  • lower: scapular depression, upward rotation, retraction
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4
Q

trapezius innervation

A

spinal accessory n., C3-4

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5
Q

latissimus dorsi origin

A

lumbodorsal fascia; iliac crest; inferior angle of scapula; ribs 9-12

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6
Q

latissimus dorsi insertion

A

bicipital groove of humerus

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7
Q

latissimus dorsi action

A

shoulder extension, internal rotation, adduction

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8
Q

latissimus innervation

A

thoracodorsal n.

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9
Q

teres major origin

A

inferior angle of scapula (dorsal)

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10
Q

teres major insertion

A

bicipital groove of humerus

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11
Q

teres major action

A

shoulder extension, internal rotation, adduction

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12
Q

teres major innervation

A

lower subscapular n.

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13
Q

levator scapula origin

A

C1-C4 transverse process

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14
Q

levator scapula insertion

A

vertebral border of scapula

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15
Q

levator scapula action

A

scapular elevation

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16
Q

levator scapula innervation

A

dorsal scapular n., C3-4 n. to levator scapula

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17
Q

rhomboids origin

A
  • major: spinous process T2-T5
  • minor: spinous process C7-T1
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18
Q

rhomboids insertion

A

spine of scapula, vertebral border of scapula

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19
Q

rhomboids action

A

scapular retraction and downward rotation

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20
Q

rhomboids innervation

A

dorsal scapular n.

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21
Q

deltoids origin

A
  • anterior: lateral third of clavicle
  • middle: lateral acromion
  • posterior: spine of scapula
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22
Q

deltoids insertion

A

deltoid tuberosity of humerus

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23
Q

deltoids action

A
  • anterior: shoulder flexion, horizontal adduction, internal rotation
  • middle: shoulder abduction
  • posterior: shoulder extension, horizontal abduction, external rotation
24
Q

deltoids innervation

A

axillary n.

25
Q

coracobrachialis origin

A

coracoid process of scapula

26
Q

coracobrachialis insertion

A

middle humeral shaft

27
Q

coracobrachialis action

A

shoulder flexion and adduction

28
Q

coracobrachialis innervation

A

musculocutaneous n.

29
Q

supraspinatus origin

A

supraspinous fossa of scapula

30
Q

supraspinatus insertion

A

greater tubercle of humerus

31
Q

supraspinatus action

A

shoulder abduction - first 30°

32
Q

supraspinatus innervation

A

suprascapular n.

33
Q

infraspinatus origin

A

infraspinatus fossa of scapula

34
Q

infraspinatus insertion

A

greater tubercle of humerus

35
Q

infraspinatus action

A

shoulder extension and external rotation

36
Q

infraspinatus innervation

A

suprascapular n.

37
Q

teres minor origin

A

axillary border of scapula

38
Q

teres minor insertion

A

greater tubercle of humerus

39
Q

teres minor action

A

shoulder external rotation and extension

40
Q

teres minor innervation

A

axillary n.

41
Q

subscapularis origin

A

subscapular fossa of scapula

42
Q

subscapularis insertion

A

lesser tubercle of humerus

43
Q

subscapularis action

A

shoulder internal rotation

44
Q

subscapularis innervation

A

upper and lower subscapular n.

45
Q

pectoralis major origin

A

medial half of clavicle and sternum, upper 6 ribs cartilage

46
Q

pectoralis major insertion

A

bicipital groove of humerus

47
Q

pectoralis major action

A
  • all: shoulder adduction, horizontal adduction, internal rotation
  • upper fibers: shoulder flexion
  • lower fibers: shoulder extension to neutral
48
Q

pectoralis major innervation

A

medial and lateral pectoral n.

49
Q

pectoralis minor origin

A

anterior 2-5 ribs

50
Q

pectoralis minor insertion

A

coracoid process of scapula

51
Q

pectoralis minor action

A

scapular protraction, depression, and downward rotation

52
Q

pectoralis minor innervation

A

medial pectoral n.

53
Q

subclavius origin

54
Q

subclavius insertion

A

lower surface of clavicle

55
Q

subclavius action

A

clavicular depression

56
Q

subclavius innervation

A

n. to subclavius

Biomechanics (2 decks)

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