A 'hydrostatic skeleton' or 'hydroskeleton' is a structure found in many
Cold-blooded
organisms soft-bodied animals consisting of a fluid-filled cavity, the
coelom, surrounded by muscles. The pressure of the fluid and action of the surrounding muscles are used to change an organism's shape and produce movement, such as burrowing or swimming. Hydrostatic skeletons have a role in the locomotion of
echinoderms (starfish, sea urchins),
cnidarians (
jellyfish),
annelids (
earthworms),
nematodes, and other invertebrates. They have some similarities to
muscular hydrostats.
See also
★
Invertebrates
External links
★ http://www.cco.caltech.edu/~brokawc/Bi11/AnimalPhylogeny2.html
★ http://bama.ua.edu/~clydeard/bsc376/lecture9.htm
★ http://soma.npa.uiuc.edu/courses/physl490b/models/leech_swimming/leech_swim.html
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