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Digestive Systems

Explore the fascinating digestive systems of earthworms, fish, and frogs. Earthworms process soil through their mouths, utilizing muscle contractions to move it to the crop and gizzard, where food is ground down before waste is expelled. In fish like the yellow perch, sharp teeth and the pyloric caecum aid in grasping prey and digestion. Frogs, with their unique tongue and dual sets of teeth, capture insects with finesse, swallowing by closing their eyes and pushing food through the gullet to their cloaca for waste elimination.

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Digestive Systems

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  1. Digestive Systems Earthworm

  2. Earthworms • Segmented worms that live in the soil • It takes in soil through its mouth • Muscle contractions move the soil throughout esophagus to the crop • The gizzard- grinds up the food into smaller pieces • The food is pushed through to the anus- waste

  3. Digestion in Fish • Yellow Perch • Eats insects and other organisms • Perch has small sharp teeth to grasp it’s prey • Some fish have small pouches called- PYLORIC CAECUM • It breaks the food and absorbs it the nutrients

  4. Digestive System of a Frog • Carnivores will eat anything they catch • A frog’s tongue is attached to the front of it’s mouth so it can capture flying objects • It has 2 sets of teeth- to hold the prey • When it swallows it closes its eyes and swallows • Food moves to the GULLET • Waste materials exit its body through- CLOACA

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