| Term | Definition |
| anatomy | study and investigation of the body's' structures |
| developmental Anatomy | study of the structural changes that occur between conception and adulthood. |
| gross Anatomy | structures that are seen with the naked eye. |
| regional Anatomy | body studied area by area. |
| surface Anatomy | study of external form and its relationship to deep structures. |
| systemic Anatomy | body studied system by system (ex. immune system, respiratory system etc. **total of 11 systems in the body**) |
| cell | smallest living structure of life. |
| tissue | groups of cells that perform a similar function. |
| organ | group of tissues that perform a similar function. (ex. heart, liver, skin) |
| organ System | group of organs that perform a similar function. (ex. digestive system, small intestine, large intestine etc.) |
| organism | any living thing considered as a whole. |
| homeostasis | a defined range of values into which body parts or systems fall. (ex. temperature, blood pressure, respiratory rate etc. |
| negative Feedback | any deviation from set point is made smaller or it is resisted. |
| positive Feedback | when deviation from normal occurs, the response is to make the deviation even greater. |