medicalstate:

Normal Glucose Counter-regulation.

The maintenance of glucose under normal conditions is a balance of various hormones in the body. Insulin, produced by beta cells in the islets of Langerhans is the sole hormone that signals the decrease in blood glucose. On the other hand, there are redundant inputs to increase blood glucose given our cells’ and in particular our brain’s dependency on the energy source; glucose must be readily mobilized and supplies maintained. As shown in this diagram, glucagon, epinephrine, growth hormone, and cortisol are released at different stages of blood glucose depletion to return levels back into balance.

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