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A&P Earthworm Terms

20 Parts of the Worm

TermDefinition
Dorsal top part
Ventral bottom part
Clitellum makes mucus that dries up to form a cocoon
Mouth opening at the end allowing the intake of food consisting of particles of both living and dead substances
Setae bristle like structures that help the worm move
Sperm Duct openings in which sperm can pass through
Sperm Groove sperm moves along here from sperm duct to another worm
Oviduct tube through which eggs pass
Anus where excrement (poop) comes out
Aortic Arches surround the esophagus and function in pumping the blood throughout the body
Ventral Blood Vessel carries blood from the aortic arches to the rest of the body
Dorsal Blood Vessel returns blood to the aortic arches and has valves to prevent backflow
Ventral Nerve Cord connects the ganglia in each segment of its body with the cerebral ganglia and It coordinates movement
Pharynx moves food from the mouth to the esophagus
Esophagus carries food between the pharynx and the crop
Crop stores food
Gizzard grinds food
Intestine digests food
Seminal Vesicles store sperm produced by the earthworm
Seminal Receptacles paired organs that store sperm received from another worm during copulation
Created by: Arial
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