100CAnimalTissues - Animal Cells and Tissues Levels of...

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Animal Cells and Tissues
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Levels of Biological Organization molecules - proteins, DNA, sugar, water cells - basic unit of structure and function; smallest unit of life tissues -group of similar cells that function as a unit organs -structures that serve a specialized function and consist of two or more tissues systems - groups of tissues and organs that work together to perform one or more functions organisms - individual living things; composed of cells, tissues, organs, and systems
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Animal tissue types Epithelial —covers external surface of an animal, covers surface of internal organs, lines gut and coelomic cavity, and forms glands. Protects from injury, dehydration, and infection. Can serve as a selectively permeable surface or a sensory surface. Connective —functions is support, defense, and food storage Muscle —functions is movement i.e. skeletal, cardiac, and peristalsis Nervous —conduction of electrical impulses
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Epithelial Tissue Cell duration —days—short life span related to
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