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Gross Anatomy I NYCC > Intrinsic Back Muscles - Superficial and Intermediate > Flashcards

Intrinsic Back Muscles - Superficial and Intermediate Flashcards

1
Q

Splenius capitis origin

A

Caudal half of ligamentum nuchae, spinous processes of C7-T3/4

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2
Q

Splenius capitis insertion

A

Mastoid process and occipital bone inferior to lateral third of superior nuchal line

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3
Q

Splenius capitis innervation

A

Dorsal rami of middle cervical nerves

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4
Q

Splenius capitis blood supply

A

Muscular and descending branches of occipital artery, superficial branch of transverse cervical artery

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5
Q

Splenius capitis actions

A

Unilaterally rotate head and neck
Bilaterally extends head and neck

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6
Q

Splenius cervicis origin

A

Narrow, tendinous band from spinous processes T3-T6

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7
Q

Splenius cervicis insertion

A

Posterior tubercles of transverse processes of upper 2-3 cervical vertebrae

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8
Q

Splenius cervicis innervation

A

Dorsal rami of lower cervical nerves

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9
Q

Splenius cervicis blood supply

A

Muscular and descending branches of occipital artery
Superficial branch of transverse cervical artery

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10
Q

Splenius cervicis actions

A

Unilaterally draws head to one side and slightly rotates
Bilaterally extends head

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11
Q

Which muscles are part of the superficial layer of intrinsic back?

A

Splenius capitis and splenius cervicis

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12
Q

Which muscles are part of the intermediate layer of the intrinsic back?

A

Erector spinae group

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13
Q

Which muscles are part of the erector spinae group?

A

Iliocostalis, longissimus, spinalis

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14
Q

erector spinae group

Iliocostalis lumborum origin

A

Thoracolumbar fascia

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15
Q

erector spinae group

Iliocostalis lumborum insertion

A

Lower borders of lower 6-7 ribs near angles

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16
Q

erector spinae group

Iliocostalis lumborum innervation

A

Dorsal rami of lumbar spinal nerves

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17
Q

erector spinae group

Iliocostalis lumborum blood supply

A

Posterior intercostal arteries, lumbar arteries

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18
Q

erector spinae group

Iliocostalis lumborum actions

A

Extension and lateral flexion of vertebral column

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19
Q

erector spinae group

Iliocostalis thoracis origin

A

Upper borders of lower six ribs medial to insertions of iliocostalis lumborum

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20
Q

erector spinae group

Iliocostalis thoracis insertion

A

Upper six ribs and sometimes transverse process of C7

21
Q

erector spinae group

Iliocostalis thoracis innervation

A

Dorsal rami of thoracic spinal nerves

22
Q

erector spinae group

Iliocostalis thoracis blood supply

A

Posterior intercostal arteries

23
Q

erector spinae group

Iliocostalis thoracis action

A

Extension of vertebral column

24
Q

erector spinae group

Iliocostalis cervicis origin

A

Upper six ribs medial to the insertion of iliocostalis thoracis

25
Q

erector spinae group

Iliocostalis cervicis insertion

A

Transverse processes of C4-C6

26
Q

erector spinae group

Iliocostalis cervicis innervation

A

Dorsal rami spinal nerves C4-C6

27
Q

erector spinae group

Iliocostalis cervicis blood supply

A

Posterior intercostal arteries

28
Q

erector spinae group

Iliocostalis cervicis actions

A

Extension and lateral flexion of vertebral column

29
Q

erector spinae group

Longissimus thoracis origin

A

Thoracolumbar fascia, accessory processes of lumbar vertebrae

30
Q

erector spinae group

Longissimus thoracis insertion

A

Transverse processes of the lower nine thoracic vertebrae and lower nine ribs

31
Q

erector spinae group

Longissimus thoracis innervation

A

Dorsal rami of spinal nerves T1-T12

32
Q

erector spinae group

Longissimus thoracis blood supply

A

Posterior intercostal and lumbar arteries

33
Q

erector spinae group

Longissimus thoracis actions

A

Extension and lateral flexion of vertebral column

34
Q

erector spinae group

Longissimus cervicis origin

A

Transverse processes of upper 4-6 thoracic vertebrae medial to insertion of longissimus thoracis

35
Q

erector spinae group

Longissimus cervicis insertion

A

Transverse processes C2-C6

36
Q

erector spinae group

Longissimus cervicis innervation

A

Dorsal rami of spinal nerves C4-C8

37
Q

erector spinae group

Longissimus cervicis blood supply

A

Posterior intercostal arteries

38
Q

erector spinae group

Longissimus cervicis actions

A

Extension and lateral flexion of vertebral column

39
Q

erector spinae group

Longissimus capitis origin

A

Medial to upper border of longissimus cervicis, articular processes of lower four cervical vertebrae

40
Q

erector spinae group

Longissimus capitis insertion

A

Posterior edge of the mastoid process

41
Q

erector spinae group

Longissimus capitis innervation

A

Dorsal rami spinal nerves C3-C8

42
Q

erector spinae group

Longissimus capitis blood supply

A

Muscular branches of occipital artery, deep cervical branch of costocervical trunk

43
Q

erector spinae group

Longissimus capitis actions

A

Bilaterally extends vertebral column
Unilaterally rotates face laterally

44
Q

erector spinae group

Spinalis thoracis origin

A

Blends with longissimus thoracis, and arises from spinous processes of T11-L2

45
Q

erector spinae group

Spinalis thoracis insertion

A

Spinous processes of upper 4-8 thoracic vertebrae

46
Q

erector spinae group

Spinalis thoracis innervation

A

Dorsal rami of T1-T12

47
Q

erector spinae group

Spinalis thoracis blood supply

A

Posterior intercostal arteries

48
Q

erector spinae group

Spinalis thoracis actions

A

Extension and lateral flexion of the vertebral column

49
Q
A

Gross Anatomy I NYCC (15 decks)

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