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Hydrostatic Skeleton Closed Body Compartment Fluid Nematodes Roundworm

Hydrostatic skeletons use fluid-filled compartments and muscles for movement, found in organisms like earthworms.

A hydrostatic skeleton consists of a fluid-filled body compartment where muscles contract to alter the fluid's shape, facilitating movement in organisms like nematodes and earthworms.

Front Hydrostatic Skeleton
Back - closed body compartment with fluid
ex) nematodes (roundworm) flatworm, earthworm
- muscles change shape of skeleton, enabling movement

Tags: chapter_14, earthworm

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