Insulin, glucagon and the control of blood sugar level

If conditions in the body change too much, this can be dangerous to our health. Glucose travels in the blood and is delivered to cells for respiration. The hormones insulin and glucagon help to keep human blood sugar level constant. The pancreas secretes insulin when blood sugar level is too high; the liver absorbs glucose and coverts it to glycogen. The pancreas secretes glucagon when blood sugar level is too low; the liver converts glycogen into glucose in the blood.