Question

Glucagon is the peptide hormone that signals for the body to release glucose into the bloodstream. How does glucagon contribute to maintaining homeostasis throughout the body? What other hormones are involved in regulating the blood glucose cycle?

a) Glucagon promotes glucose uptake by body cells; insulin is the only other hormone involved.
b) Glucagon inhibits glycogen breakdown; cortisol and epinephrine regulate blood glucose levels.
c) Glucagon stimulates liver glycogen breakdown; insulin and cortisol regulate blood glucose levels.
d) Glucagon enhances glucose storage in muscle cells; insulin and thyroxine regulate blood glucose levels.

Answer 1

Glucagon contributes to maintaining homeostasis by promoting the release of glucose into the bloodstream. It stimulates glycogenolysis and gluconeogenesis to raise blood glucose levels. Insulin, cortisol, and epinephrine are other hormones involved in regulating the blood glucose cycle.

Step-by-step explanation:

Glucagon is a hormone that helps maintain homeostasis in the body by promoting the release of glucose into the bloodstream. When blood glucose levels are low, glucagon stimulates the breakdown of glycogen into glucose in the liver and muscles, a process called glycogenolysis. Glucagon also stimulates the liver to convert amino acids into glucose in a process called gluconeogenesis. These actions raise blood glucose levels back to normal homeostatic levels. Other hormones involved in regulating the blood glucose cycle include insulin, cortisol, and epinephrine.