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6 Cards in this Set
- Front
- Back
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What is a "single opening" gastrovascular cavity?
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This is when the mouth and the anus are in the same place.
Ex: Hydras and flatworms |
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What is a gastrovascular cavity that has two openings?
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This is when the food proceeds from mouth to anus.
Mostly in higher animals |
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For most animals, where does digestion take place?
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Digestion takes place outside the cells for most animals, usually in the gastrovascular cavity.
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Which animals start digesting their prey outside the body?
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Snakes & spiders
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What are the four steps of eating?
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1. Ingestion (food in mouth)
2. Digestion (breaking down bits & pieces of food) 3. Absorption (absorbing bits and pieces) 4. Elimination (stuff that can't be absorbed) |
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What is peristalsis?
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A muscular contraction that forces something in a particular direction.
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