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marine bio ch 5
| Term | Definition |
|---|---|
| closed circulatory system | a circulatory system in which the blood always remains in the vessels. |
| water vascular system | a network of water-filled canals in echinoderms, used for locomotion and feeling. |
| radula | An organ covered with hundreds of small teeth used for scraping food into the mouths of mollusks |
| notochord | a flexible supportive rod that runs the length of the body of the chordates |
| molting | the process of shedding an exoskeleton and replacing it with a new one |
| open circulatory system | a circulatory system in which blood flows out of the blood vessels and into body cavities where it comes in direct contact with cells. |
| mantle | a sheath of tissue surrounding the organs of mollusks producing the mollusks shell and aiding in respiration. |
| cephalothorax | the anterior part of an arthropod body consisting of a head and other body segments fused together. |
| carapace | an armored shield that covers the anterior portion of crustaceans. |
| ambulacral groove | a channel along the body of echinoderms through which the tube feet protube |
| chitin | a derivate of carbohydrates that provides both flexibility and support. |
| dorsal nerve cord | a long bundle of nerve cells located along the dorsal part of an organisms body. |
Created by:
maddietmann10