Biology Basics: Homeostasis and Tissues

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HOMEOSTASIS

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Maintaining a constant internal state in a changing environment.

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TISSUE

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Group of similar cells that perform a similar function.

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ORGAN

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Collection of tissues that carry out a specific life function.

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NERVOUS TISSUE

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Tissue that allow the flow of electrical signals to and from the brain.

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EPITHELIAL TISSUE

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Tissues that cover and protect underlying layers.

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MUSCLE TISSUE

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Tissues that contract or relax to allow movement.

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CONNECTIVE TISSUE

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Tissues that go between body systems (blood/ collagen).