4. Insulin and glucagon are hormones that affect blood sugar levels. The diagram below shows the feedback system used by the hum
an body to increase and decrease blood sugar levels. Higher blood sugar Insulin released Glucagon released Lower blood sugar Which of the following is NOT true about this system? It is used to maintain blood sugar levels. It is used to bring about homeostasis: It is regulated by hormones in the pancreas. It is a positive feedback loop.
