| A | B |
| Afferent | impulse traveling toward a particular center or a point of reference. |
| Anatomical Position | standard body reference position |
| Anatomy | Study of the structure of an organism and the relationship of its parts |
| Body Planes | Line of orientation dividing the body into sections |
| Cell | Smallest and most numerous structural units that possess and exhibit the basic characteristics of living matter. |
| Efferent | impulse traveling away from a particular center or other point of reference |
| Homeostasis | relative consistency of the body’s normal internal environment |
| Metabolism | the sum of the chemical reactions that occur in living organisms necessary to maintain life |
| Negative feedback | a feedback control that is inhibitory; tends to oppose a change by creating a response that is opposite to the change to the eternal environment |
| Organ | A structure made up of several different types of tissue. |
| Organism | any living entity considered as a whole |
| Parietal | The actual wall of a body cavity or the membrane lining that covers a cavity’s surface. |
| Physiology | the study of the body’s function |
| Positive feedback | a feedback control that is stimulatory; tends to amplify or reinforce a change to the internal environment |
| Somatotype | classification of body type determined on the basis of certain physical characteristics. |
| System | a group of organs that functions as a coordinated team |
| Tissue | group of similar cells that performs a common function |
| Visceral | The thin membrane that covers the organs inside a body cavity |