What are the structural features of the digestive system of an earthworm?
| December 8, 2020 | education
The digestive system of the earthworm begins with the mouth opening, which is located at the front end of the body. Further, behind the mouth is the pharynx, then the esophagus, goiter, stomach, middle and hind intestine, ending in the anus.
Three pairs of calcareous glands enter the esophagus, which serve to neutralize humic acids contained in rotting leaves that are eaten by worms. The dorsal wall of the midgut forms typhlozol.
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