Earth worms Essay

This essay has a total of 439 words and 3 pages.

earth worms



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 the digestive track , food waits here before it
passes to the remainder of the digestive track

- Gizzard - an area in the digestive track where strong muscles grind the food in preparation for digestion
- Intestine - Nutrient digestion and absorption take place in this part if the digestive track.
- Anus - Digestive wastes are expelled through this opening located on the posterior end of the worm.
Nervous system
- Brain - a center of nerve cells that coordinate all of the activities of the worms body
- Ventral nerve cord - A cord of nerves that runs the length of the body along the bottom
Continues for 2 more pages >>