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Multiple Choice
Which endocrine hormone promotes the release of glucose from the liver into the bloodstream?
A
Glucagon
B
Insulin
C
Thyroxine
D
Cortisol
Verified step by step guidance
1
Understand the role of the liver in glucose metabolism: The liver stores glucose in the form of glycogen and releases it into the bloodstream when needed.
Identify the hormones involved in glucose regulation: Glucagon and insulin are the primary hormones that regulate blood glucose levels.
Examine the function of glucagon: Glucagon is a hormone produced by the alpha cells of the pancreas. It promotes the conversion of glycogen to glucose in the liver, increasing blood glucose levels.
Contrast glucagon with insulin: Insulin, produced by the beta cells of the pancreas, facilitates the uptake of glucose by cells and promotes the storage of glucose as glycogen, lowering blood glucose levels.
Consider other hormones: Thyroxine and cortisol also affect metabolism, but they do not directly promote the release of glucose from the liver like glucagon does.