Earth Worm
Disection
Parts Function
Digestive System
- Prostomium - a small fleshy lobe that extends over the mouth, used to help dig through the soil
- Mouth - the entrance for food into the digestive system, located under the prostomium
- Pharynx - A tube at the beginning of the digestive tract that creates a sucking action to remove food particles from the soil, located just behind the mouth
- Esophagus - a narrow passage in the digestive track that connects the pharynex to the crop
- Crop - a temporary storage area in …showed first 85 words of 429 total…
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…showed last 85 words of 429 total…body of the worm. Materials secreted from the clitellum form a cocoon in which the eggs are hatched and the young worms develop.
- Setae - Bristle structures found on the skin of the worm. Four pair of Satae are found on each segment except the first and last. Satae are used for movement.
- Segments (somites) - The divisions in the skin of a segmented worm. The internal segments are called septum. There can be over 100 segments in the body of a worm.
Bibliography
http://www.earthworms.com
