Hesi Anatomy and Physiology Exam Questions With Complete Solutions

Hesi Anatomy and Physiology Exam Questions With Complete Solutions homeostasis - Answer body's maintenance of a stable environment receptors - Answer molecule or cell that provides information about the environment control center (and set point) - Answer indicates correct value (e.g. body temp) effectors - Answer What elicits a response that alters conditions within the body's internal environment. (e.g. muscles and glands) negative feedback - Answer When receptors measure deviations from the set point, effectors are activated and conditions are returned toward the set point and effectors gradually shut off. This movement toward homeostasis and balance is called ......... positive feedback - Answer Homeostatic mechanisms that function when changes byeffectors move the body away from normal conditions, causing more changes, is called...... (examples are blood clotting and labor contractions) organelles, cells, tissues, organs, organ systems, organism - Answer Levels of organization organelle - Answer Cell components that perform a specific function cells - Answer Basic unit of structure and function tissues - Answer Groups of cells organized into layers or masses that have specific functions organs - Answer Structures that perform a specialized function (comprised of tissues) Organ systems - Answer Groups of organs that function together closely Organism - Answer Comprised of an interacting organ system superior - Answer above, or closer to the head inferior - Answer below, or closer to the feet Anterior (Ventral) - Answer Toward the front Posterior (Dorsal) - Answer Toward the back medial - Answer Toward the midline