Control of Physiological Systems Flashcards
1
Q
What are the two types of control?
A
Voluntary and involuntary
2
Q
Where is the voluntary control initiated?
A
In the cerebral cortex
3
Q
What is homeostasis?
A
The maintenance of a constant internal environment.
4
Q
Why do feedback systems rarely provide perfect control?
A
There are signal delays and inability of the sensors to detect the smallest changes which can then lead to a big change.
5
Q
What is the term when homeostasis is reestablished?
A
Successful Compensation
6
Q
Give 4 examples of feedback systems in physiological control
A
- control of blood pressure
- regulation of breathing
- control of plasma glucose
- control of plasma osmolarity
7
Q
Why is positive feedback wanted?
A
- very rapid response
- all or nothing
- examples: action potential, blood clot formation, reproduction
