Final answer:
The release of glucagon occurs when blood glucose concentration falls too low, stimulating glycogenolysis and gluconeogenesis to raise blood glucose levels back to normal.
Step-by-step explanation:
When blood glucose concentration falls too low, the correct response is B) Release of glucagon. The alpha cells of the pancreas detect the drop in blood glucose levels and release glucagon, which has a hyperglycemic effect.
Glucagon promotes the breakdown of glycogen to glucose in the liver and muscle cells, in a process known as glycogenolysis.
Furthermore, it stimulates gluconeogenesis, the production of glucose from amino acids and fatty acids. Thus, glucagon works to increase blood glucose levels and prevent hypoglycemia.
The increase in blood glucose levels eventually inhibits further glucagon release through a negative feedback mechanism, therefore maintaining homeostatic glucose levels.
the correct response is B) Release of glucagon.