Control of Physiological Systems Flashcards

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1
Q

What are the two types of control?

A

Voluntary and involuntary

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2
Q

Where is the voluntary control initiated?

A

In the cerebral cortex

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3
Q

What is homeostasis?

A

The maintenance of a constant internal environment.

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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.

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5
Q

What is the term when homeostasis is reestablished?

A

Successful Compensation

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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
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7
Q

Why is positive feedback wanted?

A
  • very rapid response
  • all or nothing
  • examples: action potential, blood clot formation, reproduction
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