Worm Dissection

Exterior
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Terms in this set (20)
Exterior
outside
Hermaphrodites
organisms having both male and female reproductive organs
Image: Hermaphrodites
Clitellum
thickened band of segments that contain earthworm sex organs and produce a cocoon from which young earthworms hatch
Image: Clitellum
Anterior
front of the body, in an earthworm the end of the body closer to the clitellum
Posterior
back of the body, in an earthworm the end of the body further to the clitellum
Segments
the division of the body of an organism into a series of similar parts
Ventral
belly side, in an earthworm the down side that is a slightly lighter color
Image: Ventral
Dorsal
toward the back, in an earthworm, the top ide that is a slightly darker color
Image: Dorsal
Scalpel
a small sharp knife used by doctors and scientists in medical operations or dissections
Image: Scalpel
T-pins
used to hold down dissection specimen
Image: T-pins
Closed circulatory systemA circulatory system in which the oxygen-carrying blood cells never leave the blood vesselsReproductive systemsystem of organs involved in producing offspringSexual reproductionA reproductive process that involves two parents that combine their genetic material to produce a new organism, which differs from both parentsSeminal veciclestore sperm produced within the wormSeminal recepticalreceive sperm from another wormNervous systemthe network of nerve cells and fibers that transmits nerve impulses between parts of the body, in an earthworm can be found on the ventral sideDigestive systemBreaks down food into smaller molecules. Absorbs these nutrients into the body, filled with dirt in an earthwormCropthin-walled food storage sac in an earthworm, similar to the stomach of a vertebrateGizzardthick-walled muscular pouch below the crop in an earthworm for grinding foodIntestinean organ of the digestive system that removes nutrients and water from digested food

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