deep back mm

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all things deep back

Last updated 12:41 AM on 9/9/26
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11 Terms

1
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what do the deep back mm do?

move trunk/torso

2
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serratus posterior superior

elevate ribs

<p>elevate ribs</p>
3
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serratus posterior inferior

depress ribs

<p>depress ribs</p>
4
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what does serratus posterior inferior and superior do?

  • aid in respiration

  • origin is vertebral column

  • inserts in ribs


5
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true back muscles (I and O is in the back)

  1. erector spinae

  2. transversospinalis


6
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erector spinae

primary extensors of vertebral column

origin is lower back, insertion is upwards

<p>primary extensors of vertebral column</p><p>origin is lower back, insertion is upwards</p>
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parts of erector spinae

  1. spinalis

  2. longissimus

  3. iliocostalis


8
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parts of transversospinalis

  1. semispinalis (superficial and longest, 5-6 vertebrae)

  2. multifidus (intermediate, 3-4)

  3. rotatores (deepest and shortest, 1-2)


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transversospinalis

extension of vertebral column, rotation, lateral flexion = posture

<p>extension of vertebral column, rotation, lateral flexion = posture</p>
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splenius muscles

bandage muscles bc they cover vertical mm of neck like a bandage

<p>bandage muscles bc they cover vertical mm of neck like a bandage</p>
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parts of splenius muscles

  1. splenius capitis - O in V.C (C7-T4), I in head

  2. splenius cervicis - O in C1-C4, I in neck