Describing a Physiological Variable as "Homeostatic" Means That It

question 56

Multiple Choice

Describing a physiological variable as "homeostatic" means that it

• A)has varied from the normal value,and will remain constant at the new value.
• B)never varies from an exact set point value.
• C)is in an equilibrium state that requires no energy input to stay at the normal value.
• D)is in a state of dynamic constancy that is regulated to remain near a stable set point value.
• E)has no normal range,but will just change to match the outside environmental conditions. 

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Definitions:

Neural Damage

Harm or injury to the cells within the nervous system, which can affect its function partially or totally.

Medulla

A section of the brainstem responsible for regulating vital body functions such as heart rate, blood pressure, and respiration.

Breathing

The process of taking air into and expelling it from the lungs to facilitate gas exchange with the internal environment, mainly by bringing in oxygen and flushing out carbon dioxide.

Cerebral Spinal Fluid

A clear, colorless body fluid found in the brain and spinal cord, acting as a cushion for the brain's cortex, providing basic mechanical and immunological protection.