Question

after fasting for 24 hours, which hormone would be secreted to increase blood glucose levels?
a insulin
b aldosterone
c glucagon
d oxytocin

Explanation:

• Option A: Insulin lowers blood glucose by promoting glucose uptake and storage, so it's incorrect.
• Option B: Aldosterone regulates sodium and potassium balance, not blood glucose, so it's incorrect.
• Option C: Glucagon is secreted to increase blood glucose levels, especially during fasting, by promoting glycogenolysis and gluconeogenesis.
• Option D: Oxytocin is involved in childbirth and lactation, not blood glucose regulation, so it's incorrect.

Answer:

C. Glucagon