MOT548 Spine and Thorax Muscles

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Last updated 4:26 AM on 7/4/26
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10 Terms

1
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Extrinsic/superficial back muscles innervation

Anterior rami of cervical spinal nerves (except trapezius/CN XI)

2
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Trapezius action

Elevation, depression, and retraction of the scapula

<p>Elevation, depression, and retraction of the scapula</p>
3
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Latissimus dorsi action

Extension, adduction, and internal rotation (IR)

<p>Extension, adduction, and internal rotation (IR)</p>
4
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Levator scapulae action

Elevates scapula, downward rotation, and neck movement

<p>Elevates scapula, downward rotation, and neck movement</p>
5
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Serratus posterior inferior action

Elevate or depress ribs (intermediate layer)

<p>Elevate or depress ribs (intermediate layer)</p>
6
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Intrinsic/deep back muscles innervation

Posterior rami of spinal nerves

<p>Posterior rami of spinal nerves</p>
7
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Splenius capitis action

Head and neck movement (extension, rotation, lateral flexion)

<p>Head and neck movement (extension, rotation, lateral flexion)</p>
8
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Erector spinae action

Back extension

<p>Back extension</p>
9
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Core muscles innervation

Anterior rami of thoracic and lumbar spinal nerves

<p>Anterior rami of thoracic and lumbar spinal nerves</p>
10
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External and internal obliques action

Trunk rotation, flexion, and lateral flexion

<p>Trunk rotation, flexion, and lateral flexion</p>