Two curved arrows form a loop. On the left side of the loop, the text reads ‘GLUCAGON (promotes breakdown of glycogen’. On the right side of the loop, the text reads ‘INSULIN (promotes glucose uptake)’. The text in the middle reads ‘Pancreas releases insulin or glucagon in response to blood glucose levels’. The text on the top reads ‘Food intake increases blood glucose level’. The text at the bottom reads ‘Between meals, blood glucose level drops’.