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Muscles > Deep Back and Trunk Muscles > Flashcards

Deep Back and Trunk Muscles Flashcards

1
Q

O: Multifidus

A

From the back of the sacrum; mamillary processes of lumbar; transverse processes of thoracic; articular processes of lower four cervical

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2
Q

I: Multifidus

A

onto spinous processes of higher vertebrae; each multifidus spans 2-4 vertebrae

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3
Q

N: Multifidus

A

supplied segmentally by dorsal primary rami of lumbar, thoracic spinal nerves

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4
Q

A: Multifidus

A

bends or laterally flexes the vertebral column and rotates it to the opposite side, both sides act together to extend

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5
Q

B: Multifidus

A

muscular branches of the aorta

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6
Q

O: Rotatores

A

mammillary processes of lumbar; articular processes of cervical; transverse processes of thoracic vertebrae deep to multifidus

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7
Q

I: Rotatores

A

base of the spines of the lumbar immediately above; base of the spines of the cervical immdeiately above; base of the spine of the thoracic vertebra above the origin

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8
Q

N: Rotatores

A

dorsal promary rami of lumbar, thoracic, and cervical spinal nerves

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9
Q

A: Rotatores

A

extension and bending to opposite side

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10
Q

B: Rotatores

A

muscular branches of aorta

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11
Q

O: External Oblique

A

fleshy slips from outer surface of ribs 5-12

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12
Q

I: External Oblique

A

outer lip of iliac crest; aponeurosis of external oblique (linea alba)

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13
Q

N: External Oblique

A

lower seven thoracic nerves T6-T12

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14
Q

A: External Oblique

A

compresses abdominal viscera; each muscle bends the trunk to same side and rotates front of abdomen to opposite side; both muscles flex trunk forward

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15
Q

B: External Oblique

A

lower intercostal and iliac or iliolumbar artery

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16
Q

O: Internal Oblique

A

lateral 2/3 of inguinal ligament; middle lip of iliac crest; thoracolumbar fascia

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17
Q

I: Internal Oblique

A

inferior border of lower 3 or 4 ribs; linea alba; fuses with external oblique

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18
Q

N: Internal Oblique

A

lower five thoracic nerves and first lumbar nerve T8-L1

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19
Q

A: Internal Oblique

A

compresses abdominal viscera; both muscles flex trunk; each muscle bends and rotates the front of abdomen toward same side

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20
Q

B: Internal Oblique

A

subcostal arteries

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21
Q

O: Rectus Abdominus

A

fifth, sixth, and seventh costal cartilages; costoxiphoid ligaments and xiphoid process

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22
Q

I: Rectus Abdominus

A

crest of pubis and pubic tubercle; front of pubic symphysis

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23
Q

N: Rectus Abdominus

A

lower seven thoracic nerves T6-T12

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24
Q

A: Rectus Abdominus

A

flexes vertebral column; tenses anterior abdominal wall; compresses abdominal contents

25
Q

B: Rectus Abdominus

A

epigastric artery and small contribution from lower intercostal

26
Q

O: Quadratus Lumborum

A

iliolumbar ligament and the adjacent iliac crest

27
Q

I: Quadratus Lumborum

A

medial half of the 12th rib and onto transverse processes of upper four lumbar vertebrae

28
Q

N: Quadratus Lumborum

A

branches from T12-L4

29
Q

A: Quadratus Lumborum

A

flexes vertebral column to same side; fixes 12th rib in breathing; both muscles together extend lumbar

30
Q

B: Quadratus Lumborum

A

lumbar and iliolumbar artery

31
Q

O: Diaphragm

A

dorsum of xiphoid process; inner surfaces of cartilages and adjacent parts of lower 6 ribs; medial and lateral acruate ligaments; cura from bodies of upper 2 or 3 lumbar vertebrae

32
Q

I: Diaphragm

A

central tendonof diaphragm

33
Q

N: Diaphragm

A

phrenic nerve C3-C5

34
Q

A: Diaphragm

A

active during inspiration; assists in increasing intraabdominal pressure

35
Q

B: Diaphragm

A

phrenic artery

36
Q

O: Intercostals

A

inferior border of rib above

37
Q

I: Intercostals

A

superior border of the rib below

38
Q

N: Intercostals

A

intercostal nerve (from ventral rami of thoracic nerve)

39
Q

A: Intercostals

A

externals: draw ribs superiorly and assist with inhalation; internals: draw ribs inferiorly and assist with exhalation

40
Q

B: Intercostals

A

intercostal arteries

41
Q

O and I: Intertransversarii

A

spanning transverse processes of C2-L5

42
Q

N: Intertransversarii

A

spinal nerve

43
Q

A: Intertransversarii

A

laterally flex the vertebral column to same side; extension

44
Q

O and I: Interspinalis

A

spanning spinous processes of C2-L5

45
Q

N: Interspinalis

A

spinal nerve

46
Q

A: Interspinalis

A

extend the vertebral column

47
Q

What muscles form the abdominals?

A

rectus abdominus, external and internal obliques, transverse abdominus

48
Q

What muscles form the transversospinalis group?

A

multifidi, rotatores, semispinalis capitis

49
Q

Vertebral Column Flexion

A

rectus abdominus, external and internal obliques (psoas major and iliacus with insertion fixed)

50
Q

Vertebral Column Extension

A

longissimus, iliocostalis, multifidi, rotatores, semispinalis capitis, spinalis, quadratus lumborum (assists), interspinalis, intertransversarii, latissimus dorsi (assists when arm fixed)

51
Q

Vertebral Column Rotation

A

opposite: external oblique, multifidi, rotatores; same: internal oblique

52
Q

Vertebral Column Lateral Flexion

A

iliocostalis, external and internal oblique, longissimus, quadratus lumborum, psoas major (assists), intertransversarii, spinalis, latissimus dorsi (assists)

53
Q

Elevation/Expansion of Ribs (Inhalation)

A

anterior/middle/posterior scalene, SCM (assists), external intercostals (assists), serratus posterior superior, pec major, pec minor and SA (if scapula fixed), subclavius

54
Q

Depression/Collapse of Ribs (Exhalation)

A

internal intercostals (assists), serratus posterior inferior

55
Q

O: Transverse Abdominus

A

lateral 1/3 of inguinal ligament and inner lip of ilian crest; thoracolumbar fascia; inner surface of ribs 7-12

56
Q

I: Transverse Abdominus

A

ends in an aponeurosis; upper fibers - linea alba, help form posterior layer of rectus sheath; lower fibers - attach to pubis to form conjoined tendon

57
Q

A: Transverse Abdominus

A

tenses abdominal wall; compresses abdominal contents

58
Q

N: Transverse Abdominus

A

lower six thoracic and first lumbar nerves (T7-L1)

59
Q

B: Transverse Abdominus

A

subcostal arteries

Muscles (9 decks)

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