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12 Cards in this Set
- Front
- Back
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mantle
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a sheath of tissue surrounding the organs of a mollusk, producing the mollusk's shell and performing respiration
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radula
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an organ covered with hundreds of small teeth, used for scraping food into the mouths of mollusks
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chitin
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a derivative of carbohydrates that provides both flexibility and support
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open circulatory system
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a circulatory system in which blood flows out of the blood vessels and into body cavities, where it comes in direct contact with cells
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closed circulatory system
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a circulatory system in which the blood always remains in vessels
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molting
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the process of shedding an exoskeleton and replacing it with a new one
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cephalothorax
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the anterior part of an arthropod body, consisting of a head and other body segments fused together
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carapace
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an armored shield that covers the anterior portion of crustaceans
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water vascular system
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a network of water-fillled canals in echinoderms, used for locomotion and feeding
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ambulacral groove
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a channel along the oral surface of echinoderms thorough which the tube feet protrude
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notochord
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a flexible supportive rod that runs the length of the body of the chordates
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dorsal nerve cord
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a long bundle of nerve cells located along the dorsal part of an organism's body
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