Which feedback mechanism is used to regulate blood glucose?
a. a positive feedback loop because the blood glucose level was returned to the set point, not amplified
b. a negative feedback loop because the blood glucose level was returned to the set point, not amplified
c. a negative feedback loop because the blood glucose level was amplified, not returned to the set point
d. a positive feedback loop because the blood gluc

B. a negative feedback loop because the blood glucose level was returned to the set point, not amplified

The glands which get involved are the pancreas and adrenal glands. During increase in blood sugar, the pancreas secretes insulin, a hormone produced by the beta cells of the pancreas. Insulin causes red blood cells, muscle cells and fat cell to absorb sugar from the blood.During decrease of blood sugar, the pancreas secretes  glucagon, a hormone produced by the alpha cells of the pancreas. Glucagon causes the liver to release the glucose stored in its cells.The Adrenal gland secretes cortisol during times of low blood sugar levels.  Cortisol promotes the use of fatty acids to provide energy for working muscles, rather than using glucose.

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