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Exoskeletons

exoskeleton

(Science: cell biology) a skeleton, or support structure, which supports the organisms body from the outside and is formed from the ectoderm. All arthropods (spiders, insects, crustaceans, horseshoe crabs, etc.) possess one.

Compare: endoskeleton.

Any structure that is formed from the ectoderm in vertebrates, like nails, claws, hair, fur, horns, or teeth. (Note: does not include skin, which is an organ.)


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Coral and Scyphzoans

Firsd one is exoskeletons. It is the calcium carbonate skeleton that created coral reefs. You are right with the second one. Mature scyphozoans are all medusae. Juveniles are, in most cases polyps but change at a very early stage ...

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by firechild
Tue Feb 02, 2010 2:13 am
 
Forum: Zoology Discussion
Topic: Coral and Scyphzoans
Replies: 1
Views: 3028

Chitinous

... would suffice. That is why, along with the weight, I guess marine arthropods are much larger: they use gills and the water supports their heavy exoskeletons. Hope I got it right this time! :O

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by biohazard
Thu Oct 22, 2009 7:48 am
 
Forum: Zoology Discussion
Topic: Chitinous
Replies: 6
Views: 5232

Re: Humor me; can our bodies can be smaller but the same?

... have half the muscle mass for example and still be able to use all the tools our society offers. Bones could be thinner if we made some sort of exoskeletons to support ourselves, and the overall body size probably only had to be big enough to accommodate our brain and the function of our hands ...

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by biohazard
Tue Jan 29, 2008 8:01 am
 
Forum: Cell Biology
Topic: Humor me; can our bodies can be smaller but the same?
Replies: 9
Views: 4269

Why are animals soooo strong???

... animals, it's a combination of smaller muscles being relatively stronger, and a lot of animals whose strength you hear about (like ants) have exoskeletons, which are more kinetically powerful than endoskeletons. More power translated to movement, less lost in connections.

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by Darby
Sat Jul 07, 2007 5:44 pm
 
Forum: Zoology Discussion
Topic: Why are animals soooo strong???
Replies: 5
Views: 6459

Difference in Phylums?

... are 2 distinctive features that makes the Arthropod phylum different from Annelids,Mollusks, Roundworms,Sponges, Cnidarians, & Flatworms? * Exoskeletons & a Coelom ? I would appreciate any help. Thanks!

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by LiL Homie
Wed Feb 07, 2007 12:07 am
 
Forum: Physiology
Topic: Difference in Phylums?
Replies: 4
Views: 6086
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