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Gross Anatomy > Intrinsic Back > Flashcards

Intrinsic Back Flashcards

1
Q

Serratus Posterior Superior O

A

nuchal ligament

spinous process C7-T3

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2
Q

Serratus Posterior Superior I

A

superior borders of 2-4 ribs

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3
Q

Serratus Posterior Superior Innervation

A

2nd-5th intercostal nerves

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4
Q

Serratus Posterior Superior Motion

A

elevate ribs

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5
Q

Serratus Posterior Inferior O

A

Spinous process of T11 - L2 vertebrae

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6
Q

Serratus Posterior Inferior I

A

Inferior borders of 8th - 12th ribs near their angles

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7
Q

Serratus Posterior Inferior Innervation

A

9th -11th intercostal nerves

subcostal (T12) nerve

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8
Q

Serratus Posterior Inferior Motion

A

depress ribs

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9
Q

What makes up the erector spinae muscles?

A

Iliocostalis: lateral column
Longissimus: Intermediate column
Spinalis: medial column

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10
Q

Iliocostalis O

A

Broad tendon from posterior part of the iliac crest
posterior surface of the sacrum
sacro-iliac ligament
sacral and inferior lumbar spinous processes
supraspinous ligament

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11
Q

Iliocostalis I

A

(lumborum, thoracis, and cervicis): fibers run superiorly to angles of lower ribs and cervical transverse processes

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12
Q

Iliocostalis Innervation

A

posterior rami of spinal nerve

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13
Q

Iliocostalis Motion

A

Bilaterally: extend vertebral coulmn and head
when back is flexed, controls movement by gradually lenghtening fibers

Unilaterally: laterally flex vertebral column

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14
Q

Longissimus O

A

Broad tendon from posterior part of the iliac crest
posterior surface of the sacrum
sacro-iliac ligament
sacral and inferior lumbar spinous processes
supraspinous ligament

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15
Q

Longissimus I

A

(thoracics, cervicis, and capitis): fibers run superiorly to ribs between tubercles and angles to transverse processes in thoracic and cervical regions and to mastoid process of temporal bone

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16
Q

Longissimus Innervation

A

posterior rami of spinal nerve

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17
Q

Longissimus Movement

A

Bilaterally: extend vertebral coulmn and head
when back is flexed, controls movement by gradually lenghtening fibers

Unilaterally: laterally flex vertebral column

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18
Q

Spinalis O

A

Broad tendon from posterior part of the iliac crest
posterior surface of the sacrum
sacro-iliac ligament
sacral and inferior lumbar spinous processes
supraspinous ligament

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19
Q

Spinalis I

A

(thoracis, cervicis, and capitis): fibers run superiorly to spinous processes in upper thoracic region and to cranium

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20
Q

Spinalis Innervation

A

posterior rami of spinal nerve

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21
Q

Spinalis Motion

A

Bilaterally: extend vertebral coulmn and head
when back is flexed, controls movement by gradually lenghtening fibers

Unilaterally: laterally flex vertebral column

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22
Q

Splenius Capitis O

A

Arises from nuchal ligament and spinous processes of C7-T6 vertebrae

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23
Q

Splenius Capitis I

A

fibers run superolaterally to mastoid process of temporal bone and lateral third of superior nuchal line of occipital bone

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24
Q

Splenius Capitis Innervation

A

Posterior rami of spinal nerves

25
Q

Splenius Capitis Motion

A

Alone: laterally flex neck and rotate head to side of active muscles
Together: extend head and neck

26
Q

Splenius Cervicis O

A

Arises from nuchal ligament and spinous processes of C7-T6 vertebrae

27
Q

Splenius Cervicis I

A

tubercles of transverse processes of C1-C3 or C4 vertebrae

28
Q

Splenius Cervicis Innervation

A

Posterior rami of spinal nerves

29
Q

Splenius Cervicis Motion

A

Alone: laterally flex neck and rotate head to side of active muscles
Together: extend head and neck

30
Q

Semispinalis Capitis and Cervicis O

A

Arises from transverse processes of C4-T10 vertebrae

31
Q

Semispinalis Capitis and Cervicis I

A

Fibers run superomedially to occiptal bone and spinous processes in upper thoracic and cervical regions, spanning 4-6 segments

32
Q

Semispinalis Capitis and Cervicis Innervation

A

Posterior Rami of Spinal Nerves

33
Q

Semispinalis Capitis and Cervicis Motion

A

Extend head and thoracic and cervical regions of vertebral column and rotates them contralaterally

34
Q

Multifidus O

A 
posterior sacrum
posterior superior iliac spine of ilium
aponeurosis of erectro spinae
sacro-iliac ligaments
mamillary processes of lumbar vertebrae
transverse processes of thoracic vertebrae
articular processes of C4-C7
35
Q

Multifidus I

A

fibers pass obliquely superomedially to entire length of spinous processes of vertebrae located two to four segments superior to origin

36
Q

Multifidus Innervation

A

Posterior Rami of Spinal Nerves

37
Q

Multifidus Motion

A

Unilateral contraction rotates to contralateral side

Stabilizes vertebrae during local movements of vertebral column

38
Q

Rotatores Brevis and Longus O

A

transverse processes of vertebrae

best develped in thoracic region

39
Q

Rotatores Brevis and Longus I

A

fibers run superomedially to attach to junction of lamina andtransverse process or spinous process of vertebra immediately (brevis)

or

two segments (longus) superior to vertebra of origin

40
Q

Rotatores Brevis and Longus Innervation

A

Posterior Rami of Spinal Nerves

41
Q

Rotatores Brevis and Longus Motion

A

May function as organs of proprioception

Possibly stabilize vertebrae and assist with local extension and rotary movements of vertebral column

42
Q

Obliquus Capitis Inferior O

A

spinous process of C2

43
Q

Obliquus Capitis Inferior I

A

transverse process of C1 vertebrae. no attachment to the cranium

44
Q

Obliquus Capitis Inferior Innervation

A

Posterior ramus C1 (suboccipital nerve)

45
Q

Obliquus Capitis Inferior Motion

A

** Bilateral: extends head

Unilateral: rotates head to same side

46
Q

Obliquus Capitis Superior O

A

transverse process of C1

47
Q

Obliquus Capitis Superior I

A

occipital bone between superior and inferior nuchal lines

48
Q

Obliquus Capitis Superior Innervation

A

Posterior ramus C1 (suboccipital nerve)

49
Q

Obliquus Capitis Superior Motion

A

**Bilateral: extends head

Unilateral: tilts head to same side /rotates head to opposite side

50
Q

Rectus Capitis Posterior Major O

A

spinous process of C2

51
Q

Rectus Capitis Posterior Major I

A

lateral part of inferior nuchal line of occiptal bone

52
Q

Rectus Capitis Posterior Major Innervation

A

Posterior ramus C1 (suboccipital nerve)

53
Q

Rectus Capitis Posterior Major Motion

A

** Bilateral: extends head

Unilateral: rotates head to the same side

54
Q

Rectus Capitis Posterior Minor O

A

posterior tubercle on posterior arch of C1 vertebra

55
Q

Rectus Capitis Posterior Minor I

A

medial third of inferior nuchal line

56
Q

Rectus Capitis Posterior Minor Innervation

A

Posterior ramus C1 (suboccipital nerve)

57
Q

Rectus Capitis Posterior Minor Motion

A

**Bilateral: extends head

Unilateral: rotates head to same side

58
Q

know boundries and contents of the suboccipital triangle

Gross Anatomy (22 decks)

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