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Physiology
Week 1-7
| Question | Answer |
|---|---|
| Four basic components in feedback control loop | 1. Sensor mechanism 2. Integrator or control center 3. Effector mechanism 4. Feedback |
| Afferent (A-add) | signal is traveling towards a particular center or point of reference |
| Efferent (E-exit) | signal is moving away from a center or other point of reference |
| Integrator | Control center- receives input from a homeostatic sensor. |
| Effectors | organs such as muscles or glands that directly influence controlled physiological variables |
| Negative feedbsck | Create a response that is opposite in direction to the initial disturbance |
| Positive feedback | tends to amplify or reinforce the change that is occuring. |
| Feed-forwarfd | concept that information may flow ahead to another process to trigger a change in anticipation of an event that will follow. |
| Homeostasis | relative constancy of the body's internal fluid environment. |
| 4 major groups of organic substances | 1. carbohydrates 2. lipids 3. proteins 4. Nucleic acids and related molecules |
| macromolecules | many subunits attached to one another or to other chemical compounds |
Created by:
moralesjessicaj
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