Control of Physiological Systems
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What are the two types of control?
Voluntary and involuntary
Where is the voluntary control initiated?
In the cerebral cortex
What is homeostasis?
The maintenance of a constant internal environment.
Why do feedback systems rarely provide perfect control?
There are signal delays and inability of the sensors to detect the smallest changes which can then lead to a big change.
What is the term when homeostasis is reestablished?
Successful Compensation
Give 4 examples of feedback systems in physiological control
• control of blood pressure • regulation of breathing • control of plasma glucose • control of plasma osmolarity
Why is positive feedback wanted?
• very rapid response • all or nothing • examples: action potential, blood clot formation, reproduction