Biol Study Guide

Biol Study Guide - Objective 14 1. Use the animal phylogeny...

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Objective 14 1. Use the animal phylogeny to compare digestive compartments and mechanisms across the animal phylogeny. Use your knowledge of body plan in animals to make predictions about digestion in diverse animals. Food particles, such as bacteria, stick to the mucus in the collar cells. Those food particles are then taken up through the membrane of the choanocyte by a process called phagocytosis. The food is either digested in the choanocyte or moved to the amoebocyte which delivers the food to other cells in the sponge cell body. 2. Recreate the pathway of digestion in humans from the mouth to the anus. Describe the role of each organ and the major enzymes, hormones, etc. involved in digestion in each organ. Use your knowledge of human digestion to make predictions about digestion in other animals. Gastrovascular Cavity o Captured prey are stuffed into the gastrovascular cavity through the mouth. o Cells lining the gastrovascular cavity secreted digestive enzymes into the cavity, breaking down the prey into smaller pieces.
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o These food particles are then engulfed by other cells lining the gastrovascular cavity and the pieces are further digested, as they are in phagocytosis in the sponges. 3. Describe how H. pylori cause ulcers. 4. Use your knowledge of homeostatic systems to understand the control of digestion by gastrin. Objective 15
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Biol Study Guide - Objective 14 1. Use the animal phylogeny...

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