| Term 
 | Definition 
 
        | The study of the macroscopic structures of an organism |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | The study of the microscopic structures of an organism |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | The study of the functions of an organism and its parts |  | 
        |  | 
        
        | Term 
 | Definition 
 | 
        |  | 
        
        | Term 
 | Definition 
 
        | A group of tissues specialized for a particular function |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Groups of cells specialized for a particular function |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | A state of equilibrium in the body with respect to its functions, chemical levels, and tissues |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | A structure in the body that can change the value of a variable |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | The ability to let certain materials in or out while restricting others |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | The process by which large molecules are taken into the cell |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Transportation of material from inside the cell to outside the cell |  | 
        |  |