Levels of organization and tissues

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10 Terms

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Levels of organization

Chemical, cellular, tissue, organ, organ system, organism

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Tissue

A group of similar cells performing a common function

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4 types of tissue

Epithelial, connective, muscle, nervous

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Epithelial tissue

Covers and lines body surfaces; protection, absorption, secretion

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Connective tissue

Supports, binds, and protects; the most abundant tissue type

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Muscle tissue

Produces movement through contraction

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Nervous tissue

Transmits electrical impulses

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Homeostasis

Maintaining a stable internal environment despite external changes

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Negative feedback

Response that REVERSES the original stimulus (most common)

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Positive feedback

Response that AMPLIFIES the original stimulus (childbirth, clotting)