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Anatomy > Back > Flashcards

Back Flashcards

1
Q

Origin of Trapezius

A

upper = occipital bone

middle/lower = ligamentum nuchae and SP of C7 - T12

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2
Q

Insertion of Trapezius

A

upper = lateral clavicle

middle = acromion

lower = spine of scapula

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3
Q

action of trapezius

A

upper fibers

  • bilaterally extend the head and neck
  • unilaterally laterally flex head and neck to the same side
  • rotate the head and neck to the opposite side
  • elevate and upwardly rotate the scapula

middle fibers
- adduct and stabilize the scap

lower fibers
- depress and upwardly rotate the scap

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4
Q

innervation of trapezius

A

CN XI and ventral ramus of C2 - C4

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5
Q

origin of latissimus dorsi

A
  1. inferior angle of scap
  2. SP of last 6 thoracic vert
  3. last 3 or 4 ribs
  4. thoracolumbar aponeurosis
  5. posterior iliac crest
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6
Q

insertion of latissimus dorsi

A

intertubercular groove of the humerus

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7
Q

action of latissimus dorsi

A

extend, adduct and internally rotate the shoulder

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8
Q

innervation of latissimus dorsi

A

thoracodorsal nerve C6, 7, 8

TD 6, 7, 8

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9
Q

origin of levator scapulae

A

TP of C1 - C4

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10
Q

insertion of levator scapulae

A

medial border of the scap (between superior angle and superior portion of spine of scap)

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11
Q

action of levator scapulae

A

unilaterally

  • elevate and downwardly rotate scap
  • laterally flex head and neck
  • rotate head and neck to the same side

bilaterally
- extend the head and neck

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12
Q

innervation of levator scapulae

A

C3 - 4

dorsal scapular nerve C4 - 5

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13
Q

origin of rhomboid major

A

SP T2 - T5

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14
Q

insertion of rhomboid major

A

medial border of the scap between spine of scap and inferior angle

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15
Q

action of rhomboid major

A

adduct, elevate and downwardly rotate scap

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16
Q

innervation of rhomboid major

A

dorsal scap nerve c 4,5

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17
Q

origin of rhomboid minor

A

SP C7 - T1

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18
Q

insertion of rhomboid minor

A

upper portion of medial border of the scap, across from the spine of scap

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19
Q

action of rhomboid minor

A

adduct, elevate and downwardly rotate scap

20
Q

innervation of rhomboid minor

A

dorsal scap C4, 5

21
Q

origin of serratus posterior superior

A

SP C7 - T3

22
Q

insertion of serratus posterior superior

A

posterior surface of ribs 2 - 5

23
Q

action of serratus posterior superior

A

elevate ribs during inhalation

24
Q

innervation of serratus posterior superior

A

intercostal nerve T1 - 4

25
Q

origin of serratus posterior inferior

A

SP T12 - L3

26
Q

insertion of serratus posterior inferior

A

posterior surface of ribs 9 - 12

27
Q

action of serratus posterior inferior

A

depress the ribs during exhalation

28
Q

innervation of serratus posterior inferior

A

intercostal nerves T9 - 12

29
Q

origin of iliocostalis

A

lumborum = common tendon

thoracis and cervicis = posterior surface of ribs 1 - 12

30
Q

insertion of iliocostalis

A

lumborum = TP L1 - L3, posterior surface of ribs 6 - 12

thoracic = posterior surface ribs 1 - 6

cervicis = TP lower cervicals

31
Q

action of iliocostalis

A

unilaterally = laterally flex vertebral column to the same side

bilaterally = extend vertebral column

32
Q

innervation of iliocostalis

A

spinal nerves

33
Q

origin of longissimus

A

thoracis = common tendon

cervicis and capitis = TP of upper 5 thoracic vertebrae

34
Q

insertion of longissimus

A

thoracis = lower 9 ribs and TP of thoracic vertebrae

cervicis = TP of cervical vertebrae

capitis = mastoid process of temporal bone

35
Q

innervation of longissimus

A

spinal nerves

36
Q

origin of spinalis

A

thoracis
- SP of the upper lumbar and lower thoracic vertebrae

cervicis

  • ligamentum nuchae
  • SP C7
37
Q

insertion of spinalis

A

thoracis = SP of upper thoracic

cervicis = SP of cervicals, except C1

38
Q

action of spinalis

A

unilaterally
- laterally flex vertebral column to the same side

bilaterally
- extend the vertebral column

39
Q

innervation of spinalis

A

spinal nerves

40
Q

origin of multifidus

A

sacrum and TP of lumbar through cervical vertebrae

41
Q

insertion of multifidus

A

SP of lumbar vertebrae C2

42
Q

action of multifidus

A

unilaterally - rotate vertebral column to the opposite side

bilaterally - extend the vertebral column

43
Q

innervation of multifidus

A

spinal nerves

44
Q

origin of rotatores

A

TP of lumbar through cervical vertebrae (span 2 to 4 vertebrae)

45
Q

insertion of rotatores

A

SP of lumbar vertebrae to C2 (span 1 to 2 vertebrae)

46
Q

action of rotatores

A

unilaterally - rotate vertebral column to the opposite side

bilaterally extend the vertebral column

47
Q

innervation of rotatores

A

spinal nerves

Anatomy (11 decks)

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