Definitions for "Hydrostatic skeleton"
Hydroskeleton (S) High internal pressure maintained within the pseudocoelom, pushing outward on the cuticle, can give the nematode a significant structural integrity not unlike the solid skeleton in higher animals. In fact, C. elegans is known to be able to leave the substrate and actively wave its body in the air (nictation), holding fast just by its tail.
a water-based skeleton present in many animals (such as the earthworm) that lack structures, such as bone, for muscles to pull against.
( hy-droh- stat-ik) A skeletal system composed of fluid held under pressure in a closed body compartment; the main skeleton of most cnidarians, flatworms, nematodes, and annelids.