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The top documents tagged [open circulatory systems]
THE EARTHWORM. Large, muscular tubes that alternately contract and relax, keeping the blood flowing, Throat cavity; used by earthworms to suck in soil
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1. Explain Which groups of animals tend to have open circulatory systems and which have closed. 2. Compare and Contrast What is the major structural difference
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Animal Body Plans. Major Body Plan Characteristics of Animals Symmetry Primary Germ Layers Gut Organization Body Cavity Segmentation Skeletal Systems
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CHAPTER 23 CIRCULATION. OPEN AND CLOSED CIRCULATORY SYSTEMS Among the unicellular protists, oxygen and nutrients are obtained directly by simple diffusion
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The Circulatory System. The Nature of Blood Circulation A circulatory system distributes materials throughout the vertebrate body (and some invertebrates)
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Marine Invertebrates Molluscs. Snails, clams, octopuses, and other familiar forms are members of the phylum Mollusca There are more species of molluscs
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Circulatory Systems (Ch. 42) Take a look at a skeleton and see how well a heart is protected — open heart surgery takes breaking a body to get to the
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Introduction to Animals Essential Questions: What makes an animal an animal? How are animals classified?
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Chapter 23 Circulation. Circulatory System Circulatory systems facilitate exchange with all body tissues All cells must receive nutrients, exchange gases,
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Chapter 42: CIRCULATION AND GAS EXCHANGE The circulatory system solves this problem by rapidly transporting fluid in bulk throughout the body, connecting
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Major Animal Phyla Biology 103 Animal Lab. Phylum Porifera Sponges Asymmetrical or Radial symmetry No organs Most are Marine Sessile filter-feeders Asexual
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Circulatory System For animals with many cell layers, gastrovascular cavities are insufficient for internal distances because the diffusion transports
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