When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels.
A. Positive Feedback Response
B. Negative Feedback Loop
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Hormones cause specific effects by ______.
A. Flooding the entire body
B. Targeting specific parts of the brain
C. Targeting specific groups of cells in the body
D. Spreading through the nervous system
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