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ShareAn exoskeleton, in contrast to an endoskeleton, is an external anatomical feature that supports and protects an animal's body.
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All arthropods (such as insects, spiders and crustaceans) and many other invertebrate animals (such as shelled mollusks) have exoskeletons.
Lobsters, for example, have tough outer shell systems which provide rigidity and shape to their bodies.
For more information about the topic Exoskeleton, read the full article at Wikipedia.org, or see the following related articles:
Skeleton — In biology, the skeleton or skeletal system is the biological system providing physical support in living organisms. Skeletal systems are commonly ... > read more
Animal shell — A shell is a hard, rigid outer layer, which has evolved in a very wide variety of different animals, including mollusks, sea urchins, crustaceans, ... > read more
Arthropod — Arthropods (phylum Arthropoda) are the largest phylum of animals and include the insects, arachnids, crustaceans, and others. More than 80% of ... > read more
Keratin — Keratins are a family of fibrous structural proteins; tough and insoluble, they form the hard but nonmineralized structures found in reptiles, birds ... > read more
Crayfish — Crayfish, sometimes called crawfish, are freshwater crustaceans resembling small lobsters, to which they are closely related. They are found in ... > read more
Bone — Bone, also called osseous tissue is a type of hard endoskeletal connective tissue found in many vertebrate animals. Bones support body structures, ... > read more
Trachea — Trachea is a common biological term for an airway through which respiratory air transport takes place in organisms. In terrestrial vertebrates, such ... > read more
Black widow spider — The black widow spider (Latrodectus spp.) is a spider notorious for its neurotoxic venom. It is a large widow spider found throughout the world and ... > read more
Gastropod shell — The gastropod shell is an animal shell which is part of the body of a gastropod or snail. It is an external skeleton or exoskeleton, which serves not ... > read more
Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Exoskeleton at Wikipedia.org. See the Wikipedia copyright page for more details.
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