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Vocabulary Review

Vocabulary Review. Ch 38 – Echinoderms and Invertebrate Chordates. A radially symmetrical marine invertebrate that has an endoskeleton, such as a starfish, a sea urchin, or a sea cucumber. Echinoderm. One of the small, calcium carbonate plates that make up the endoskeleton of an echinoderm.

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Vocabulary Review

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  1. Vocabulary Review Ch 38 – Echinoderms and Invertebrate Chordates

  2. A radially symmetrical marine invertebrate that has an endoskeleton, such as a starfish, a sea urchin, or a sea cucumber Echinoderm

  3. One of the small, calcium carbonate plates that make up the endoskeleton of an echinoderm Ossicle

  4. A system of canals filled with a watery fluid that circulates throughout the body of an echinoderm Water-vascular system

  5. One of many small, flexible, fluid-filled tubes that project from the body of an echinoderm and that are used in locomotion, feeding, gas exchange, and excretion Tube foot

  6. In some protists and invertebrates, a protective covering that the organism secretes or builds around itself Test

  7. On the surface of some echinoderms, very small pincers that are used for protection against ectoparasites Pedicellaria

  8. The porous structure through which water enters and exits the water-vascular system of echinoderms Madreporite

  9. A tube that connects the madreporite to the ring canal Stone canal

  10. Canal that encircles the mouth of an echinoderm Ring canal

  11. Canals that extend from the ring canal down each of the rays of the starfish, delivering water to ampullae and tube feet Radial canal

  12. On the upper end of a tube foot of an echinoderm, a bulblike sac that forces water into the tube foot and causes the tube foot to expand Ampulla

  13. Stomach of the sea star that can turn inside out through its mouth; transfers food to the pyloric stomach Cardiac stomach

  14. Stomach that connects to a pair of digestive glands in each arm Pyloric stomach

  15. Bilaterally symmetrical, free-swimming larva of a sea star Bipinnaria

  16. An opening from the atrial cavity to the exterior in certain fish Atriopore

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