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Chapter27Vocab

Chapter 27 Vocab

TermDefinition
pedicellaria small pincher that helps echinoderms catch food and remove foreign materials form the skin.
water-vascular system system of fluid-filled, closed tubes that allow echinoderms to control movement and get food
madreporite strainer like opening through which water enters the water-vascular system in most echinoderms
tube foot one of the muscular, small, fluid-filled tubes with suction-cuplike ends that enable echinoderms to move and collect food.
ampulia in echinoderms, the muscular sac that contracts to force water into the tube foot, allowing it to extend.
chordate animal of the phylum Chordata having a dorsal tubular nerve cord, a notochord, pharyngeal pouches, and a postanal tail at some point in its development
invertebrate chordate chordata without a backbone
notochord flexible, rod like structure extending the length of the chordate body, enabling thae body to bend and make side-to-side movements
postanal tail chordate structure used primarily for locomotion
dorsal tubular nerve cord tube-shaped chordate nerve cord located above the digestie organs
pharyngeal pouch in chordate embryos, one of the paired structures connecting the muscular tube lining the mouth cavity and the esophagus
Created by: Kdunivan
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