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Ch 28 vocab
vocabulary
| Question | Answer |
|---|---|
| cartilage | a tough, flexible material making up the skeletons or parts of skeletons of vertebrates. |
| neural crest | a group of cells that develop from the nerve cord in vertebrates. |
| fin | a paddle-shaped structure on a fish or other aquatic animal that is used for balance, steering, and propulsion. |
| scale | small, flat, plate like structure near the surface of the skin. |
| operculum | a movable flap that covers the gills and protects them. |
| atrium | the chamber of the heart that receives blood from the body. |
| ventricle | a chamber of the heart that pumps blood from the heart to the gills. |
| nephron | a filtering unit within the kidney that helps to maintain the salt and water balance of the body and to remove cellular waste products from the blood. |
| lateral line system | enables fishes to detect movement in the water and also helps to keep them upright and balanced. |
| spawning | male and female fishes release their gametes near each other in the water. |
| swim bladder | the buoyant force of water reduces the effect of gravity on fishes. |
| tetrapod | four-footed animal with legs that have feet and toes with joints. |