Blood Glucose Regulation Interactive Widget

Your body fights glucose spikes with opposite hormones

Insulin and glucagon work antagonistically — when one rises, the other falls. This push-pull control maintains blood glucose within a narrow 4-6 mmol/L range despite constant fluctuations from eating and fasting. Drag the slider to simulate changing blood glucose levels and watch how hormone secretion responds.

Antagonistic Control Normal Range
Drag to simulate glucose change after eating or fasting
Blood Glucose: 5.0 mmol/L
3 mmol/L 5 mmol/L 10 mmol/L
Insulin Level Medium
Glucagon Level Medium
Insulin is released by beta cells in the pancreas after eating and binds to receptors on liver and muscle cells. This binding triggers three key effects: it increases the number of glucose transport proteins in cell membranes allowing more glucose uptake, activates enzymes for glycogenesis to convert glucose into glycogen for storage, and increases glucose use in cellular respiration. The result is a rapid decrease in blood glucose levels back toward the normal range of 4-6 mmol/L.
Know This

When blood glucose rises, insulin increases while glucagon decreases — they work as antagonistic hormones to maintain homeostasis in the narrow 4-6 mmol/L range.