Earthworm digestive system

LI. To write a eighteen sentence explanation. This week for writing we had to write a eighteen sentence explanation about how the earthworm digestive system works and the steps of the process. First Mr. Wong wrote a paragraph about the pharynx, then we got into our groups and then write a paragraph about the esophagus. We also had to write a statement and explanation in order to get a decent paragraph. We had to use a planner to plan the explanation.

Earthworm digestive system

The earthworm digestive system is a complex cycle, the cycle starts with- prostomium, pharynx,
esophagus, crop, gizzard, intestine, and anus. A digestive system is a group of organs or body parts
helping something or someone digest the food they have been given or eating.

Earthworms swallow food through the mouth. A flap, called the prostomium under the mouth holds
the worm’s food in.

The food travels down to the pharynx. It gets lubricated in mucous, which makes it slimy and slick.

The slimy food travels down the esophagus. It gets mixed with calcium carbonate which neutralizes
the acid.

The crop is a storage zone. The slicky food gets mixed together again.

The gizzard churns and mixes the food. The gizzard churns the food for the earthworms because
they have no teeth to grind the food themselves; in the food there is very tiny rocks and sand
grains that helps grind the food, also a chemical digestion starts in the gizzard.

The paste then travels to the Intestine. The volume of the earthworm body is made up of the intestine,
the food passes through the earthworm and intestine, while it travels through kind of bacteria starts to
break food down, so the blood vessels that line the intestine can take in the nutrients into parts of the
body.

When all the waste travels to the end of the Intestine the anus will take all the waste out so it can
be a healthy Earthworm. It will release its uran, the digestive system’s style is a complex cycle or system.

Prostomium covers mouth, food in pharynx, into esophagus, crop stores food, gizzard churns food,
travels intestine, exits anus.

This process or cycle is like the human digestive system because humans have acid in the stomach that
breaks down the food or chunks we have not chewed.