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In earthworms, it is a dorsal flap of the intestine that runs along most of its length, effectively forming a tube within a tube, and increasing the absorption area by that of its inner surface. Its function is to increase intestine surface area for more efficient absorption of digested nutrients.
Instead of being coiled like a mammalian intestine, in the earthworm's intestine a large mid-dorsal, tongue-like fold is present, called a typhlosole, with many folds running along its length, increasing its surface area to increase nutrient absorption. The intestine has its own pair of muscle layers like the body, but in reverse order—an ...
Gizzard of a chicken. The gizzard, also referred to as the ventriculus, gastric mill, and gigerium, is an organ found in the digestive tract of some animals, including archosaurs (birds and other dinosaurs, crocodiles, alligators, pterosaurs), earthworms, some gastropods, some fish, and some crustaceans.
Earthworms in this family have the ability to decompose lignocellulose, which requires assistance from microorganisms in their digestive system. [9] Aside from microorganisms, digestive enzymes such as amylase and cellulase , and proteins can be found in different regions of the gut .
The coelom (or celom) [1] is the main body cavity in many animals [2] and is positioned inside the body to surround and contain the digestive tract and other organs.In some animals, it is lined with mesothelium.
A. lumbricoides is the largest intestinal roundworm and is the most common helminth infection of humans worldwide. Infestation can cause morbidity by compromising nutritional status, [ 3 ] affecting cognitive processes, [ 4 ] inducing tissue reactions such as granuloma to larval stages, and by causing intestinal obstruction , which can be fatal.
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An earthworm's digestive system consists of a mouth, pharynx, esophagus, crop, gizzard, and intestine. The mouth is surrounded by strong lips, which act like a hand to grab pieces of dead grass, leaves, and weeds, with bits of soil to help chew.