red earthworm
An earthworm's digestive system is divided into many parts, each with a certain job. The digestive system consists of the pharynx, the esophagus, the crop, the intestine and the gizzard. Then food, like soil, enters the earthworm’s mouth where it is swallowed by the pharynx. Then the soil goes into the esophagus, that has glands that release calcium carbonate to rid the earthworm’s body of excess calcium.
After it passes through the esophagus, the food moves into the crop where it is stored and then eventually moves into the gizzard. The gizzard uses stones that the earthworm eats to grind the food completely. The food moves into the intestines as gland cells in the intestine release fluids to aid in the digestive process. The intestinal wall contains blood vessels where the digested food is absorbed and transported to the rest of the body.
After it passes through the esophagus, the food moves into the crop where it is stored and then eventually moves into the gizzard. The gizzard uses stones that the earthworm eats to grind the food completely. The food moves into the intestines as gland cells in the intestine release fluids to aid in the digestive process. The intestinal wall contains blood vessels where the digested food is absorbed and transported to the rest of the body.