Imagine you are entering a darkened cavern. You are excited, but also a little nervous. Your heart rate quickens, your blood pressure rises slightly, and your digestive system activity decreases as blood is diverted to your muscles-all changes that prepare you should you need to move rapidly. This type of change is an example of:
A. positive feedback control.
B. open loop feedback.
C. negative feedback control.
D. feedforward regulation.
E. a failure of homeostasis.
Answer: D
Biology & Microbiology
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