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Anatomy Exam 2: Lectures 8-15 > Lecture 15: Deep Back Muscles > Flashcards

Lecture 15: Deep Back Muscles Flashcards

1
Q

What are epaxial muscles?

A

spinalis
longissimus
iliocostalis

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2
Q

What are hypoxia muscles?

A 
quadratus lumborum
external oblique
internal oblique 
transversus 
rectus abdominus
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3
Q

Superficial back muscles connect ____ to axial skelton

A

limb

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4
Q

What are the superficial back muscles innervated by?

A

ventral rami or CN XI

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5
Q

What muscles are superficial back muscles?

A 
trapezius
latissimus dorsi
levator scapulae 
rhomboideus major 
rhomboideus minor
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6
Q

Intermediate muscles are ____ muscles

A

respiratory

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7
Q

What are intermediate back muscles innervated by?

A

ventral rami

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8
Q

What muscles make up the intermediate back muscles?

A

serratus posterior superior

serratus posterior inferior

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9
Q

What are the deep back muscles innervated by?

A

dorsal (posterior) rami

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10
Q

What are the three groups of the deep back muscles?

A

superficial
intermediate
deep

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11
Q

What makes up the superficial group of the deep back muscles?

A

splenius capitis

splenius cervicis

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12
Q

What makes up the intermediate group of the deep back muscles?

A

iliocostalis
longissiumus
spinalis

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13
Q

What makes up the deep group of the deep back muscles?

A

semispinalis
multifundus
rotatores

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14
Q

Superficial and intrinsic back muscles are ______ and deep back muscles are ______

A

extrinsic; intrinsic

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15
Q

What is the thoracolumbar fascia?

A

triangular shaped sheet of tough connective tissue covering lower back

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16
Q

Posterior thoracolumbar fascia laminae attaches to ______

A

lumbar spinous process

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17
Q

Middle thoracolumbar fascia laminae attaches to ______

A

lumbar transverse processes

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18
Q

anterior thoracolumbar fascia laminae attaches to ______

A

attaches to lumbar transverse processes

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19
Q

Serratus posterior superior origin

A

ligamentum niche; spinous processes of C7- T1-2(3)

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20
Q

Serratus posterior superior insertion

A

Ribs 2-5

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21
Q

Serratus posterior superior action

A

elevate upper ribs during inspiration

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22
Q

Serratus posterior superior innervation

A

ventral rami of intercostals (T1- 3(4))

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23
Q

Serratus posterior Inferior origin

A

spinous process of T11-12 and L1

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24
Q

Serratus posterior Inferior insertion

A

Ribs 10(9)-12

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25
Q

Serratus posterior Inferior action

A

pull lower bis inferiorly and counteracts diaphragm

26
Q

Serratus posterior Inferior innervation

A

ventral rami of intercostals T9-12

27
Q

Superficial intrinsic muscles make up the ______ sytem

A

spinotransversalis

28
Q

What is the spinotransversalis system?

A

muscles run laterally and upward to attach to transverse processes and skull

29
Q

What are the two parts of the spinotransversalis system?

A

splenius capitis

splenius cervices

30
Q

Intermediate intrinsic muscles make up the _____ system

A

sacrospinalis

31
Q

Sacrospinalis system makes up what group?

A

erector spinae

32
Q

Deep intrinsic muscles make up the ______ system

A

transversospinalis

33
Q

muscles in sacrospinalis system

A

iliocostalis
longissimus
spinalis

34
Q

What muscles make up the transversospinalis system

A

semispinalis
multifundus
rotatores

35
Q

What innervates either side of midline of the cutaneous back

A

dorsal rami of thoracic spinal nerves

36
Q

Laterally, the cutaneous back is innervated by

A

lateral cutaneous branches of the intercostal nerves

37
Q

What are the intrinsic muscles of the back innervated by?

A

dorsal (posterior) rami

38
Q

Splenius capitis origin

A

spinous processes of C7 and T1-4

39
Q

Splenius capitis insertion

A

superior nuchal line and mastoid

40
Q

Splenius cervicis origin

A

spinous processes of T3-6

41
Q

Splenius cervicis insertion

A

C1-C4 transverse processes with levator scapulae

42
Q

The iliocostalis is the _____ part of the erector spinae group

A

lateral

43
Q

Action of iliocostalis

A

extends back; keeps erect posture

44
Q

Components of iliocostalis

A

lumborum
thoracis
cervicis

45
Q

iliocostalis origin

A

ilium and sacrum

46
Q

iliocostalis insertion

A

most of the ribs

47
Q

Longissimus is the ____ portion of the erector spinae group

A

middle

48
Q

Components of longissimus

A

thoracis
cervicis
capitis

49
Q

Longissimus origin

A

transverse processes and sacrum

50
Q

Longissimus insertion

A

most of ribs

51
Q

Spinalis origin

A

spinous processes of T11-L2

52
Q

Spinalis insertion

A

spinous process of thoracic and lower cervical vertebrae

53
Q

Components of spinalis

A

thoracis
cervicis
capitis

54
Q

What are the components of the semispinalis?

A

thoracis
cervicis
capitis

55
Q

Semispinalis cervicis origin

A

T1-4

56
Q

Semispinalis cervicis insertion

A

C3-5

57
Q

Semispinalis capitis origin

A

T1-6 and C4-7

58
Q

Semispinalis capitis insertion

A

between superior and inferior nuchal lines

59
Q

Multifidus origin

A

from sacrum and surrounding structures and from transverse processes up to C4, including maxillary processes of lumbar vertebrae

60
Q

multifidus insertion

A

on spinous processes C2-L5

61
Q

Long rotatores span ____ segments

A

two

62
Q

Short rotatores span ____ segments

A

one

Anatomy Exam 2: Lectures 8-15 (7 decks)

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