Which hormone secreted by the pancreas signals hunger by lowering blood sugar levels?

• A. Insulin
• B. Glucose
• C. Glucagon
• D. Leptin

Answer: (A)

Verified step by step guidance

1. Understand the role of the pancreas in regulating blood sugar levels and its connection to hunger signals.
2. Identify the hormones secreted by the pancreas: insulin and glucagon.
3. Learn that insulin is responsible for lowering blood sugar levels by facilitating the uptake of glucose into cells.
4. Recognize that glucagon has the opposite effect of insulin, raising blood sugar levels by promoting the release of glucose from stored glycogen.
5. Conclude that insulin is the hormone that signals hunger by lowering blood sugar levels, as it helps reduce glucose concentration in the bloodstream.