Insulin is a chemical that is produced by the and controls

Hello Bill81 


 Insulin is a chemical that is produced by the pancreas  and controls blood sugar
Reason: It helps regulate the metabolism of different food groups by encouraging the absorption of blood sugar into different cells. When insulin levels are high, glucose production by the liver is reduced, as it means there are already high blood sugar levels from food.

Hope This Helps!
-Chris

If it's a smaller child or infant, place one on the middle of the chest and on the child's back. (if it is a bigger child with enough room for two, place one on the upper right/your left of the chest, and one on the lower left/your right) the pads should never touch each other.