Muscular system
Muscular system
Muscular system
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Axial musculature: tetrapod condition<br />
• Hypaxial musculature:<br />
– Subdivided into layers.<br />
• 2 outer oblique layers, 1 inner transverse layer.<br />
• Mammals: oblique layers further subdivided,<br />
separated by intercostal muscles.<br />
–Supports soft tissues of abdomen.<br />
• Rectus abdominus.<br />
• Derived from external longitudinal ‘layer’ of<br />
fishes.<br />
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