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Muscular System: Vertebral Column OIA
BI 301L: Anatomy and Physiology (Portland State University)
15
Anatomy
Undergraduate 3
10/30/2011

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Cards

Term
Rectus abdominis origin
Definition

Origin: pubic symphysis and superior margin of pubis

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Term
Rectus abdominis insertion
Definition

Insertion: Xiphoid process and costal cartridges of rib 5-rib 7

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Term
Rectus abdominis action
Definition

Action: flexes lumbar region of vertebral column

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Term
Erector spinae origin
Definition

Origin: nichal ligament, ribs 3-12, thoracic and lumbar vertebrae, median and lateral sacral crests, thoracolumbar fascia

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Term
Erector spinae insertion
Definition

Insertion: mastoid process,cervical and thoracic vertebrae, all ribs

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Term
Erector spinae action
Definition

Action: extension and lateral flexion of vertebral column

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Term
Semispinalis thoracis origin
Definition

Origin: vertebrae T6-T10

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Term
Semispinalis thoracis insertion
Definition

Insertion: vertebrae C6-T4

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Term
Semispinalis thoracis action
Definition

Action: extension and contralateral rotation of vertebral column

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Term
Multifidus origin
Definition

Origin: vertebrae C4-L5, posterior superior iliac spine, sacrum, aponeurosis or erector spinae

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Term
Multifidus insertion
Definition

Insertion: laminae and spinous processes of vertebrae superior to origins

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Term
Multifidus action
Definition

Action: stabilization of adjacent vertebrae, control of vertebral movement with erector spinae

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Term
Quadratus lumborum origin
Definition

Origin: iliac crest and iliolumbar ligament

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Term
Quadratus lumborum insertion
Definition

Insertion: last rib and transverse processes of lumbar vertebrae 1-4

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Term
Quadratus lumborum action
Definition

Action: depresses ribs, alone, each side laterally flexes vertebral column, together the extend vertebral column

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