Hydrostatic skeleton

A hydrostatic skeleton is one in which the body's shape and/or function is maintained by an incompressible fluid such as blood or hemolymph. Such skeletons are mostly found in soft-bodied invertebrates such as such as earthworms and jellyfish. A fluid-filled cavity is surrounded by muscle fibres, which can contract to change the shape of the cavity. They have some similarities to Muscular hydrostats.

Related Topics:
Fluid - Blood - Hemolymph - Muscular hydrostat

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