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Chapter25 Vocab
| Question | Answer |
|---|---|
| in free-living flatworms, the tube like muscular organ that can extend out of the mouth and suck food particles into the digestive tract. | pharynx |
| in flatworms, a cilia-lined, bulb like cell that moves water and certain substances into excretory tubules for elimination outside the body. | flame cell |
| group of nerve-cell bodies that coordinates incoming and outgoing nerve impulses. | ganglion |
| ability to replace or regrow body parts missing due to predation or damage | regeneration |
| parasitically adapted, knoblike anterier end of a tapeworm, having hooks and suckers that attach to the host's intestinal lining. | scolex |
| continuously formed, detachable section of a tapeworm that contains male and female reproductive organs, flame cells, muscles, and nerves; breaks off when its eggs are fertilized and passes out of the host's intestine | proglottid |
| the pseudocolom in roundworms; the fluid within a closed space that gives rigid support for muscles to work against | hydrostatic skeleton |
| disease caused by eating raw or undercooked meat, usually pork, infected with Trichinella larvae | trichinosis |
| membrane that surrounds a mollusk's internal organs | mantle |
| rasping tongue like organ with rows of teeth that many mollusks use in feeding | radula |
| respiratory structure of most mollusks and aquatic arthropods | gill |
| blood is pumped out of vessels into open spaces surrounding body organs | open circulatory system |
| blood is confined to the vessel as it moves though the body | closed circulatory systme |
| structure through which most mollusks eliminate metabolic waste from cellular processes | nephridium |
| tubular organ through which octopuses and squids eject water, at times so rapidly that their movement appears jet-propelled | siphon |
| sac in which food and soil are stored until they pass to the earthworm's gizzard. | crop |
| muscular sac in birds that contains hard particles that help grind soil and food before they pass into the intestine. | gizzard |
| tiny bristle that digs into soil and anchors an earthworm as it moves forward | seta |
| thickened band of segments that produce a cocoon from which young earthworm hatch. | clitellum |
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Kdunivan
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