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Spinal Exam 3 > Myology of Back > Flashcards

Myology of Back Flashcards

1
Q

The trapezius is innervated by what nerve?

A

spinal accessory nerve

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2
Q

What forms the spinal accessory nerve innervating the trapezius?

A

C1-C5 cord levels contribute to the spinal root of the spinal accessory nerve

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3
Q

The latissiums dorsi is innervated by what nerve?

A

thoracodorsal nerve

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4
Q

What forms the thoracodorsal nerve innervating the latissimus dorsi?

A

ventral rami of C6-C8

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5
Q

What forms the dorsal scapular nerve?

A

ventral ramus of C5

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6
Q

What is the innervation of the splenius capitis?

A

dorsal rami of middle cervical spinal nerves (C3-C5 cord levels)

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7
Q

Splenius cervicis will attach to what locations on the spine?

A

lateral mass of C1 & posterior tubercle of transverse process on C1-C4

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8
Q

Which muscles are identified as erector spinae or sacrospinalis muscles?

A

iliocostalis, longissiumus, spinalis

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9
Q

What is the innervation of iliocostalis lumborum?

A

dorsal rami of lower thoracic and all lumbar spinal nerves

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10
Q

What osseous parts of the vertebral column serve as an origin to the iliocostalis thoracis?

A

none

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11
Q

What is the insertion for the iliocostalis thoracis?

A

costal angles of the upper 6-7 ribs,

transverse process of C7

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12
Q

What osseous parts of the vertebral column serve an origin to the longissimus thoracis?

A

accessory process & transverse processes of L1-L5,
spinous processes of L3-L5,
medial sacral crest of S1-S3

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13
Q

What is the innervation of the longissimus cervicis?

A

dorsal rami of C4-C8 (C4-C8 cord levels),

T1-T2 spinal nerves (T1-T2 cord levels

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14
Q

What osseous parts of the vertebral column serve as an origin to the spinalis thoracis?

A

spinous processes of T11 & T12, L1 & L2

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15
Q

Which muscles are identified as transversospinalis muscles?

A

semispinalis, multifidis, rotators

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16
Q

How many vertebrae can be attached to a single segment by transversospinalis muscles?

A

as many as 9 vertebrae

17
Q

What segment will represent the lowest attachment site for the semispinalis thoracis?

A

T12

18
Q

What osseous parts of the vertebral column serve as an origin to the semispinalis cervicis?

A

transverse tubercles of T1-T5,

or T6 & articular process of C4-C7

19
Q

Which of the cervical intertransversarii is inntervated by dorsal rami of cervical spinal nerves?

A

posterior medial belly, cervical intertransversarii

20
Q

What is the origin of the medial belly of the lumbar intertransversarii?

A

accessory process of transverse process of L1-L4

mammillary process of superior articular process of L1-L4

21
Q

Which muscle group is innervated by both dorsal rami and ventral rami of spinal nerves?

A

intertransversarii

22
Q

Based on the density of muscle spindles, what is the proposed function of the intertransversarii?

A

acts as a proprioceptive transducer in conjunction with interspinalis to coordinate the smooth movement of the spine and to maintain appropriate posture

23
Q

What is the origin of the longus colli?

A

vertebral bodies of C5-C6, T1-T3,

& anterior tubercles of transverse processes C3-C5

24
Q

What is the origin of the rectus capitis anterior?

A

lateral mass & costal element of the transverse process of C1

25
Q

What will innervate the rectus capitis anterior?

A

ventral rami of C1-C2 spinal nerves

26
Q

What will innervate the rectus capitis lateralis?

A

the ventral rami of C1-C2 spinal nerves

27
Q

What is the insertion of the anterior scalene?

A

ridge and anterior scalene tubercle of the first rib

28
Q

What is the insertion of the middle scalene?

A

between the tubercle and groove for the subclavian artery on the first rib

29
Q

What is the insertion of the posterior scalene?

A

outer surface of second rib

30
Q

What will innervate the posterior scalene?

A

ventral rami of C6-C8 spinal nerves

31
Q

The quadratus lumborum is implicated in the formation of which ligament?

A

iliolumbar ligament

32
Q

What is the origin of the psoas major?

A

vertebral bodies T12, L1-L5, S1,

and transverse processes of L1-L5

33
Q

What is the origin of the psoas minor?

A

vertebral bodies T12, L1

34
Q

What will innervate the psoas minor?

A

ventral ramus of L1 spinal nerve

Spinal Exam 3 (19 decks)

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