If your liver starts breaking down glycogen into glucose molecules, what is likely taking place elsewhere in the body? a. a excess of sugar in the blood is causing the pancreas to release the hormone glucagon. b. a shortage of sugar in the blood is causing the pancreas to release the hormone glucagon. c. an excess of sugar has caused the release of insulin. d. there is not enough sugar in the blood stream, which stimulates the kidneys to release more glucose.