To what body system do earthworms belong? Given the earthworms form of locomotion, what else are you pinning back (when dissecting) and to what body system do they belong? Lastly, this system takes up the function of what other system?
2007-04-21 08:44:26 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Biology
thanx sooo much you answered everything awesome!
2007-04-21 09:08:14 · update #1
Earthworms are coelomate - having a body cavity that contains the organs.
When you pin back the skin, you are also pinning back the muscles that are on the inner side of the skin and the bristly setae that are on the outer side of the skin. Of course, the muscles belong in the muscular system.
???
The muscles have to do with support.
The skin has to do with respiration.
???
2007-04-21 08:51:37 · answer #1 · answered by ecolink 7 · 0⤊ 0⤋
hydrostatic skeleton is what i think you mean. 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.
2007-04-21 09:03:21 · answer #2 · answered by Anonymous · 0⤊ 0⤋