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Muscle Biology > Muscle Biology of Back > Flashcards

Muscle Biology of Back Flashcards

1
Q

origin of rotatores thoracis

A

transverse process of each thoracic vertebrae

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2
Q

insertion of rotatores thoraces

A

spinous process of the vertebra above each respectivr thoracic vertebrae

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3
Q

innervation of rotatores thoracis

A

cervical, thoracic and spinal nerves

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4
Q

action of rotatores thoracis

A

extend and rotate the vertebral column

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5
Q

blood supply of rotatores thoracis

A

vertebral artery

occipital artery

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6
Q

what type of muscle is rotatores thoracis longi

A

intrinsic muscle deep in the back

in the thoracic region 11 on each side of the spine

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7
Q

what type of muscle is multifidus
what is made of
where does it extend from and extend towards

A

intrinsic muscle behind the rotatores thoracis
made of fasciculi and fill the groove on either side of the spinous process
extends from C2 to sacrum

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8
Q

origin of multifidus

A

sacrum
posterior superior iliac spine
mamillary processes of lumbar vertebrae
transverse processes of thoracic vertebrae
articular processes of cervical vertebrae (C4-C7)

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9
Q

Insertion of multifidus

A

spinous process 2-4 vertebrae superior to the origin

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10
Q

innervation of multifidus

A

posterior branches

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11
Q

action of multifidus

A

stabilizes vertebrae in local movements of the vertebral column

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12
Q

blood supply of multifidus

A

cervicis - vertebral artery and occipital artery
Thoracis - posterior intercostal arteries
Lumborum - lumbar arteries, lateral sacral artery

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13
Q

spinalis thoracis is one of what type of muscle and name the other muscles

A

in upper medial colume of erector spinae
spinalis thoracis
spinalis cervicis
spinalis capitis

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14
Q

origin of spinalis thoracis

A

spinous process of first 2 lumbar and last 2 thoracic vertebrae

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15
Q

insertion of spinalis thoracis

A

spinous process of upper thoracic vertebrae

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16
Q

innervation of spinalis thoracis

A

dorsal rami of upper cervical nerves

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17
Q

actions of spinalis thoracis

A

extends the spine

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18
Q

blood supply of spinalis thoracis

A

posterior intercostal arteries

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19
Q

origin of spinalis cervicis

A

ligamentum nuchae

spinous process of 7th cervical

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20
Q

insertion of spinalis cervicis

A

spinous process of vertebrae C2-C5

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21
Q

Innervation of spinalis cervicis

A

dorsal rami of upper cervical nerves

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22
Q

action of spinalis cervicis

A

extend head

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23
Q

blood supply of spinalis cervicis

A

posterior intercostal arteries

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24
Q

origin of iliocostalis lumbordum

A

iliac crest and lateral portion of the common erector spinae tendon

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25
Q

insertion of iliocostalis lumbordum

A

inferior borders of angles of lower 6/7 ribs

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26
Q

innervation of iliocostalis lumbordum

A

dorsal rami of spinal nerves

thoracic and upper lumbar nerves

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27
Q

action of iliocostalis lumbordum

A

extends laterally flexes and aids in rotation of the spine can depress the ribs

28
Q

blood supply of iliocostalis lumbordum

A

posterior intercostal arteries
subcostal arteries
lumbar arteries

29
Q

origin of iliocostalis thoracis

A

upper borders of angles of lower 6 ribs medial to tendons of insertion of iliocostalis lumbordum

30
Q

insertion of iliocostalis thoracis

A

upper borders of the angles of upper 6 ribs and into the back of the transverse process of 7th cervical vertebrae

31
Q

innervation of iliocostalis thoracis

A

dorsal primary rami of C8, thoracic and upper lumbae nerves

32
Q

action of iliocostalis thoracis

A

extends, laterally flexes an aids in rotation of the spine

33
Q

blood supply of iliocostalis thoracis

A

posterior intercostal arteries
subcostal arteries
lumbar arteries

34
Q

origin of iliocostalis cervicis

35
Q

insertion of iliocostalis cervicis

A

transverse processes of cervical vertebrae C4-C6

36
Q

Innervation of iliocostalis cervicis

A

dorsal rami of spinal nerves

37
Q

action of iliocostalis cervicis

A

extends laterally flexes and aids in rotation of spine

38
Q

blood supply of iliocostalis cervicis

A

occipital artery

posterior intercostal arteries

39
Q

origin of splenius capitis

A

lower half of ligamentum nuchae

spinous processes of 7th cervical vertebra through the upper 3 or 4 thoracic vertebrae C7-T3

40
Q

Insertion of splenius capitis

A

Mastoid process of temporal bone and occipital bone

41
Q

innervation of splenius capitis

A

dorsal rami of middle cervical spinal nerves

42
Q

action of splenius capitis

A

supports the head in erect position

draws head directly backwards, to one side and slightly rotates it

43
Q

blood supply of splenius capitis

A

muscular branches of aorta

44
Q

blood supply of splenius cervicis

A

occipital artery

transverse cervical artery

45
Q

origin of splenius cervicis

A

spinous processes of T3-T6

46
Q

Insertion of splenius cervicis

A

Transverse processes of C1-C3

47
Q

Innervation of splenius cervicis

A

dorsal rami of spinal nerves C1-C6

48
Q

Action of splenius cervicis

A

supports the head in erect position

draws head directly backwards, to one side and slightly rotates it

49
Q

longissimus thoracis

A

intermediate of the erector spinae

50
Q

origin of longissimus thoracis/dorsi

A

whole length of the posterior surfaces of the transverse processes and the accessory processes of the lumbar vertebrae and lumbordorsal fascia

51
Q

insertion of longissimus thoracis/dorsi

A

rounded tendons into the tips of the transverse processes of all the thoracic vertebrae and by fleshy processes into the lower 9/10 ribs between their tubercles and angles

52
Q

innervation of longissimus thoracis/dorsi

A

dorsal primary rami of the thoracic and lumbar spinal nerves

53
Q

action of longissimus thoracis/dorsi

A

extends and laterally flexes the spine aid in compression of ribs

54
Q

blood supply of longissimus thoracis/dorsi

A

posterior intercostal arteries
subcostal arteries
lumbar arteries

55
Q

origin of longissimus cervicis

A

transverse process of upper 4/5 thoracic vertebrae

56
Q

insertion of longissimus cervicis

A

posterior tubercles of the transverse processes of cervical cervical vertebrae

57
Q

innvervation of longissimus cervicis

A

dorsal primary rami of the upper thoracic and lower cervical spinal nerves

58
Q

action of longissimus cervicis

A

extends and laterally flexes the spine

59
Q

blood supply of longissimus cervicis

A

posterior intercostal arteries

60
Q

origin of longissimus capitis

A

transverse processes of the upper 4/5 thoracic vertebrae and the articular processes of the lower 3/4 cervical vertebrae

61
Q

insertion of longissimus capitis

A

posterior margin of mastoid process

beneath splenius capitis and sternocleidomastoid

62
Q

innervation of longissimus capitis

A

dorsal primary rami of the middle and lower cervical spinal nerves

63
Q

action of longissimus capitis

A

extend the head

unilaterally bends the head and turns it to face the asme side

64
Q

blood supply of longissimus capitis

A

occipital artery

65
Q

muscles that make up the erector spinae of the back

A

spinalis cervicis, spinalis thoracis, spinalis capitis - all emerge from spinous process of thoracic and cervical column - most central of all muscles
longissimus cervicis, thoracis, capitis - more lateral to spinalis cervicis, attach to transverse process of lumbar, thoracic and cervical vertebrae and lateral tubercle of lower 9-10 ribs
iliocostalis lumbordum, thoracis, cervicis - most lateral muscle

66
Q

list muscles that belong to the transversospinalis muscle of the back

A

semispinalis thoracis, semispinalis cervicis, semispinalis capitis - attached from transverse process to upper spinous process of corresponding vertebrae
multifidus
rotatores thoracis, cervicis, lumbordum - attach from transverse process to corresponding spinous process

Muscle Biology (25 decks)

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