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Amanda Hendricks
Physiology Weeks 1-6
| Question | Answer |
|---|---|
| Processes for maintaining or restoring homeostasis are known as | Homeostatic control mechanisms |
| The relatively constant state maintained by the body is known as | Homeostasis |
| What term describes a signal traveling toward a particular center or point of reference? | Afferent |
| The impact of effector activity on sensors may be positive or negative. Therefore, homeostatic control mechanisms are categorizes as | Organs that are directly influenced by physiological variables or mechanisms |
| To accomplish self-regulation, a highly complex and integrated communication control system or network is required. This type of network is called a: | Feedback control loop |
| Extrinsic control usually involves which mode of regulation? | Nervous and endocrine |
| Effectors can be described as: | Organs that are directly influence controlled physiological variables |
| Events that lead to an immune response to an infection or the formation of a blood clot are examples of | Positive feedback |
| Local control or ____, intrinsic mechanisms often make use of chemical signals | Autoregulation |
| The body naturally changes some set points to different values at different times of the day. These daily cycles are called | Circadian cycles |
| The normal reading or range is called the | Set point |
| What are the basic components of every feedback control loop? | Sensor mechanism, integrating center, effector, and feedback |
| The concept that information may flow ahead to another process to trigger a change in anticipation of an event that will follow is called | Feed-forward |
| Which level of control operates at the cell level, often using genes and enzymes to regulate cell function? | Intracellular regulation |
| Many complex processes of the body are coordinated at many levels. These include: | Intracellular, intrinsic, and extrinsic |
| Because negative feedback control systems oppose changes that are opposite in direction to the initial disturbance, they are: | Slowed or maintained in the homeostatic range |
| The normal reading or range of normal is called the: | Set point |
| Negative feedback control systems do what? | Oppose a change |
| Positive feedback control systems do what? | Accelerate a change |
| What protein substance with no DNA or RNA is thought to be the cause of mad cow disease? | Prion |
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godhungrygirl
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