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Biology Chapter 25 V

TermDefinition
Pharynx A tubelike muscular organ
Flame Cell Bulblike cells lined with cilia sweep water and excretory substances into tubules.
Ganglion A group of nerve cell bodies that coordinates incoming and outgoing nerve signals.
Regeneration A process in which body parts that are missing due to damage or predication can be regrown.
Scolex a knob-shaped structure with hooks and suckers that attach to the intestinal lining of a host such as a cow or a human.
Proglottid Behind the scolex of the worm are a series of individual sections.
Hydrostatic Skeleton Fluid within a closed space that provides rigid support for muscles to work against.
Trichinosis A disease.
Mantle A membrane that surrounds the internal organs or the mollusk.
Radula A tongue like organ with rows of teeth.
Gill Parts of the mantle that consist of a system of filamentous projections like the fringes of a blanket.
Open Circulatory System Which the blood is pumped out of vessels into open spaces surrounding the body organs.
Closed Circulatory System Blood is confined to vessels as it moves through the body.
Nephridium Most mollusks get rid of metabolic wastes from cellular processes through structures.
Siphon octopuses and squids take water into the mantle cavity and expel it through a tube.
Crop Food and soil taken in by the mouth pass through the pharynx
Gizzard A muscular sac containing hard particles that help grind soil and food before they pass into the intestine.
Seta Are tiny bristles that push into the soil and anchor the worm during movement.
Clitellum A thickened band of segments.
Created by: Alayna Long
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