explain digestive system in earthworm

Digestive System of the Earthworm

 

 Food Decaying leaves, organic matter   mixed with soil
 Mouth Terminal
 1st - 3rd segments Muscular Pharynx and Buccal cavity
 5th - 7th segments Oesophagus
 8th - 9th segments Muscular gizzard grinds the food
 9th - 14th segments Stomach (calciferous glands in the stomach neutralise humic acid of humus)
 15th segment to the last segment Intestine
 26th segment A pair of short conical intestinal caecae
 26th - 35th segments Typhlosole (median fold of the dorsal wall); increase the surface area for effective absorption
 Last segment Anus

 

 

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