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Biology

WCHS Biology Chapter 27

WordDefinition
Mantle a membrane that surrounds the internal organs of mollusks; in mollosks with shells, it secretes the shell
Radula in some snails and mollusks, the rasping, tonguelike organ used to drill, scrape, grate, or cut food
Open Circulatory System system where blood moves through vessels into open spaces around the body organs
Closed Circulatory System system in which blood moves through the body enclosed entirely in a series of blood vessels; provides an effcient means of gas exchange within the body
Nephridia organs that remove metabolic wastes from an animal's body
Setae tiny bristils that help segmented worms move by anchoring their bodies in the soil so each segment can move the animal along
Gizzard sac with muscular walls and hard particles that grind soil before it passes into the intestine; common in birds and annelids such as earthworms
Created by: dmoudy
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