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DPT 6160 FINAL EXAM: MUSCLES EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED $10.99   Add to cart

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DPT 6160 FINAL EXAM: MUSCLES EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED

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DPT 6160 FINAL EXAM: MUSCLES EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED posterior rami (intertransversarii also innervated by anterior rami) Which nerve innervates the back muscles? splenius capitis & cervicis What muscles make up the superficial layer of the intrinsic back mus...

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  • November 14, 2024
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  • 2024/2025
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DPT 6160 FINAL EXAM: MUSCLES EXAM QUESTIONS AND

ANSWERS WITH COMPLETE SOLUTIONS VERIFIED

posterior rami (intertransversarii also innervated by anterior rami)

Which nerve innervates the back muscles?

splenius capitis & cervicis

What muscles make up the superficial layer of the intrinsic back muscles?

splenius capitis

splenius cervicis

Erector spinae: (agonist)

iliocostalis

longissimus

spinalis

What muscles make up the intermediate layer of the intrinsic back muscles?

erector spinae muscles

Origin:

- iliac crest and sacrum

- sacroiliac and supraspinous ligaments

- sacral and inferior lumbar spinous processes

Insertion:

- iliocostalis: superiorly to lower ribs and cervical transverse process

- spinalis muscle: superiorly to spinous processes in upper thorax and cranium

,Actions:

- bilaterally: extension of spine & neck

- unilaterally: lateral flexion of spine

What muscle is this?

Origin?

Insertion?

Main Actions?

Create: contraction

- bilaterally: spinal extension

- unilaterally: ipsilateral lateral flexion of spine

How do the erector spinae muscles create movement?

iliocostalis

longissimus

spinalis

Transversospinales: (stabilizer)

- semispinalis

- multifudus

- rotatores (proprioceptor)

Minor: (proprioceptor)

interspinales

intertransversarii

levatores costarum

What muscles make up the deep layer of the intrinsic back muscles?

,- semispinalis capitis

- semispinalis cervicis

- semispinalis thoracis

What are the 3 segments of the semispinalis muscle?

semispinalis muscles

semispinalis capitis

semispinalis cervicis

semispinalis thoracis

multifudus muscle

Origin:

- sacrum & ligaments

- PSIS

- mammillary processes of lumbar

- transverse processes of thorax

- articular processes of C4-C7

Insertion:

spinous processes

Actions:

spinal extension

What muscle is this?

Origin?

Insertion?

Main Actions?

, rotatores muscle (brevis & longus)

Origin:

TP of spine

Insertion:

- junction of lamina

- TP/SP of spine superior to origin

Actions:

assists spinal extension & rotation

What muscle is this? (deepest)

Origin?

Insertion?

Main Actions?

interspinales muscle

intertransversarii muscle

levatores costarum muscle

What are the smallest muscles of the deep back muscles?

interspinales muscle

Origin:

superior SP of cervical and lumbar

Insertion:

inferior SP superior to origin

Actions:

aids in spinal extension & rotation

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