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Muscular system

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Axial musculature: tetrapod condition<br />

• Epaxial muscle: basic longitudinal structure<br />

in all vertebrates.<br />

– Associated with vertebral column.<br />

– Subdivided into separate muscles in tetrapods.<br />

– Attach to zygapophyses s and other processes.<br />

s<br />

• Strengthen vertebral column.<br />

– Extend anteriorly onto cranium.<br />

• Support head (esp. splenius).

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