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Gross Anatomy > Deep Back Muscles > Flashcards

Deep Back Muscles Flashcards

1
Q

The deep back muscles are all encased in what?

A

Thorocolumbar fascia

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2
Q

The three groups of deep back muscles are?

A

Splenius, Erector spinae, and transverso-spinalis

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3
Q

The splenius muscles all originate on ______ and run _____

A

Spinous processes

laterally up

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4
Q

Erector spinae run which direction

A

parallel to the midline

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5
Q

Transverso-spinalis muscles run which direction

A

From transverse process to spinous process

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6
Q

All of the deep muscles in the back are innervated by the and produce _____

A

dorsal primary rami

lateral extension of the muscle.

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7
Q

Splenius muscles are two _____shaped muscles

They are deep to the ______

A

Bandage

Trapezius

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8
Q

______are the most superficial of the deep back muscles

A

The splenius muscles

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9
Q

The splenius muscles are located where?

A

The neck and upper thorax

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10
Q

The splenius captis is a ____ shaped muscle

A

broad flat

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11
Q

Splenius Capitis (origin)

A

Spinous processes of C7-T3

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12
Q

Splenius Captis (insertion)

A

Mastoid process and lateral aspect of superior nuchal line.

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13
Q

Splenius Capitis (action)

A

Produces rotation in the direction of the contracted muscle.

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14
Q

Splenius cervicis is a _____muscle that wraps around the _____

A

narrow

splenius Capitis

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15
Q

Splenius cervicis (origin)

A

Spinous processes of T5-T7

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16
Q

Splenius Cervicis (insertion)

A

Transverse processes of C1-C4

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17
Q

Splenius Capitis and Splenius cervicis (Nerve and action)

A

Nerve:Dorsal primary rami
Action: Bilaterally- extension of head and neck, unilaterally- rotation of the same side of the contracting muscle.

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18
Q

Erector spinae features ___ columns of muscles and are ____ group of muscles seen in bundles on each side of the spine

A

3

long

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19
Q

The erector spinae muscles as a whole (origin)

A

Spinous processes of T11-S3, illiac crest, and surface of the sacrum

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20
Q

The erector spinae muscles as a whole (action)

A

Bilaterally: extension of the vertebral column
Unilaterally: Lateral flexion on the same side of contraction.

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21
Q

The erector spinae muscles as a whole (Nerve)

A

Dorsal Primary Rami

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22
Q

The three columns on erector spinae muscles are (pneumonic is I Love Spaghetti)
They run which direction?

A

iliocostalis
Longissimus
Spinalis
Straight up and down.

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23
Q

The Iliocostalis is the most ___ of the three erector spinae muscles.

What are its three parts?

A

Lateral

Lumborum, Thoracus, Cervicis

24
Q

Iliocostalis lumborum (origin)

A

Illiac crest

25
Q

Iliocostalis Lumborum (insertion)

A

Lower 6 ribs

26
Q

Iliocostalis Thoracus (origin)

A

Lower 6 ribs

27
Q

iliocostalis thoracis (insertion)

A

upper 6 ribs

28
Q

Iliocostalis Cervicis (origin)

A

Upper 6 ribs

29
Q

Iliocostalis Cervicis (insertion)

A

Transverse processes of cervical vertebrae.

30
Q

The longissimus muscle is the ____ portion and is the _____ of the erector spinae group

A

middle

longest

31
Q

Longissimus thoracis (origin)

A

illiac crest

32
Q

Longissimus thoracis (insertion)

A

Lower 9 ribs

33
Q

Longissimus Cervicis (origin)

A

Transverse processes of T1-T4

34
Q

Longissimus Cervicis (insertion)

A

Transverse processes of C3-C7

35
Q

Longissimus Capitis (origin)

A

Articular processes of C3-C7

36
Q

Longissimus capitis (insertion)

A

Mastoid process (splenius covers)

37
Q

Spinalis muscle is the most _____ of the erector spinae muscles

A

medial

38
Q

Spinalis Thoracis (origin)

A

Spinous processes of T11-L2

39
Q

Spinalis Thoracis (insertion)

A

Spinous processes of T1-T4

40
Q

Spinalis Cervicis origin and insertion are not

Spinalis captis muscle is _____ to the ____

A

Visible

fuses to the semispinalis Capitis

41
Q

The Transverso-spinalis group of muscles runs the _____ of the vertebral column and has ____ parts

A

entire length

3

42
Q

Semispinalis (thoracis) muscle is deep to the

A

erector spinae

43
Q

Semispinalis thoracis (origin)

A

Transverse processes of T6-T12

44
Q

Semispinalis Thoracis (insertion)

A

Spinous processes of T1-T6

45
Q

Semispinalis Cervicis (origin)

A

Transverse processes of T1-T6

46
Q

Semispinalis Cervicis (insertion)

A

Spinous processes of C3-C6

47
Q

Semispinalis Capitis (origin)

A

Transverse processes of T1-T6 and articular processes of C5-C7

48
Q

Semispinalis Capitis (Insertion)

A

Between the superior and inferior nuchal lines on occipital bone.

49
Q

Multifidus (part of the Transverso-spinalis muscle group) is a _____ _____ sheet of muscles

A

Long, continuous

50
Q

The multifidus muscles run from the ____ to the ____

A

sacrum

lower cervical vertebrae

51
Q

The multifidus muscles run from the _______ processes to the _______

A

transverse processes to the spinous processes of 3 vertebrae higher)

52
Q

Rotators (part of semispinalis group) are ___muscles seen in ___, ____, and ______ regions

A

tiny

Cervical, thoracic, and lumbar

53
Q

Rotators (short or brevis) run from

A

Transverse processes to spinous processes directly above

54
Q

Rotators (long or Longus) run from

A

Transverse processes to spinous processes 2 vertebrae above.

55
Q

Semispinalis muscles (action)

A

Unilaterally: Multifidus and rotators rotate in opposite direction of contraction
Bilaterally: Extension of back

56
Q

Semispinalis muscles (Nerve)

A

Dorsal primary rami

Gross Anatomy (34 decks)

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