Multiple Choice
If you have not eaten for several hours, which hormone would you expect to be in relatively high concentrations in your blood?
3. The Human Body & Digestion
Hunger, Satiety, and Hormones
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Which hormone is released in response to increased blood sugar levels?
A
Ghrelin.
B
Cholecystokinin (CCK).
C
Insulin.
D
Leptin.
Verified step by step guidance1
Step 1: Understand the role of hormones in blood sugar regulation. Hormones are chemical messengers that help maintain homeostasis in the body, including blood sugar levels.
Step 2: Identify the hormone responsible for lowering blood sugar levels. Insulin is a hormone produced by the pancreas that facilitates the uptake of glucose into cells, reducing blood sugar levels.
Step 3: Compare the functions of the other hormones listed in the problem. Ghrelin is involved in hunger signaling, cholecystokinin (CCK) aids in digestion and satiety, and leptin regulates energy balance and appetite. None of these directly lower blood sugar levels.
Step 4: Recognize the physiological trigger for insulin release. Insulin is released by the beta cells of the pancreas in response to elevated blood glucose levels, such as after eating a carbohydrate-rich meal.
Step 5: Conclude that insulin is the correct hormone responsible for responding to increased blood sugar levels, as it plays a direct role in glucose regulation.
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