Which of the following hormones are released in response to the decrease in blood glucose concentration?A. insulinB. luteinizing hormoneC. glucagonD. parathyroid hormoneE. calcitonin

Step 1: Define the Problem

Identify which hormone is released when blood glucose levels decrease.

Step 2: Break Down the Problem

• Understand the role of each hormone listed:
  • Insulin
  • Luteinizing hormone
  • Glucagon
  • Parathyroid hormone
  • Calcitonin

Step 3: Apply Relevant Concepts

• Insulin: Lowers blood glucose levels by facilitating cellular uptake of glucose.
• Luteinizing hormone: Involved in reproductive processes, not related to glucose regulation.
• Glucagon: Increases blood glucose levels by stimulating glycogen breakdown in the liver.
• Parathyroid hormone: Regulates calcium levels, not directly related to glucose.
• Calcitonin: Also involved in calcium regulation, not glucose.

Step 4: Analysis, Verify and Summarize

• Insulin is released when blood glucose is high, not low.
• Glucagon is released in response to low blood glucose to increase it.
• Luteinizing hormone, parathyroid hormone, and calcitonin do not play roles in glucose regulation.

Final Answer

C. glucagon