Which hormone is primarily responsible for lowering blood glucose levels by promoting glucose uptake and storage?

• A. Cortisol
• B. Epinephrine (adrenaline)
• C. Insulin
• D. Glucagon

Answer: (C)

Verified step by step guidance

1. Step 1: Understand the role of blood glucose regulation in the body. Blood glucose levels are tightly controlled by hormones to ensure cells receive enough energy without causing damage from high sugar levels.
2. Step 2: Identify the hormones involved in blood glucose regulation. Cortisol and epinephrine generally increase blood glucose levels by promoting glucose release, while glucagon raises blood glucose by stimulating glycogen breakdown.
3. Step 3: Recognize that insulin is the hormone responsible for lowering blood glucose levels. It does this by promoting the uptake of glucose into cells, especially muscle and fat cells, and stimulating the storage of glucose as glycogen in the liver.
4. Step 4: Recall that insulin is secreted by the beta cells of the pancreas in response to high blood glucose levels, acting as a key regulator to reduce glucose concentration in the bloodstream.
5. Step 5: Conclude that among the options given, insulin is the hormone primarily responsible for lowering blood glucose by enhancing cellular glucose uptake and storage.