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        | "large," study of systems you can see, macroscopic |  | 
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        | study of small structures, need microscope, microscopic |  | 
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 | Definition 
 
        | the study of how parts of the body work together |  | 
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 | Definition 
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 | Definition 
 
        | a group of tissues specialized for a particular function |  | 
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 | Definition 
 
        | groups of cells forming various building materials of the body |  | 
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 | Definition 
 
        | a state of dynamic equilibrium in the body with respect to its internal environment and functions |  | 
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 | Definition 
 
        | a structure in teh body that can change the value of a variable in response to a signal from the control center |  | 
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        | the ability to let certain materials in or out while restricting others |  | 
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        | the process by which large molecules are taken into the cell |  | 
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        | Term 
 | Definition 
 
        | transportation of material from inside the cell to outside teh cell using vesicles; also called secretion |  | 
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