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a group of organs that work together to perform a major function.
Examples: digestive, circulatory, respiratory, nervous |
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a structure that is composed of different kinds of tissue and has a specific function
Examples: heart, lungs, stomach |
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a group fo similar cells that perform the same function
Examples: muscle tissue, nerve tissue, connective tissue, epithelial tissue |
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| the basic unit of structure and function in a living thing |
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| functions to make parts of the body move |
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| carries messages back and forth between the brain and every other part of the body |
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| provides support for the body and connects all its parts |
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| covers the surface of the body inside and out |
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| process by which an organism's internal environment is kept in equilibrium, or stable, in spite of changes in the external environment |
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| something inside or outside an organism's body that causes the organism to react |
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| the action or change in behavior that occurs as the result of the stimulus |
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| the reaction of your body and mind to threatening, challenging, or disturbing events (stressors) |
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