Phil is a healthy college student.When he wakes up in the morning,he can't wait to eat breakfast.While he is asleep and before he consumes food or beverages,his pancreas secretes ________ to maintain his blood glucose level within normal limits.

Question

Quizplus · Accepted Answer

Glucagon is a hormone secreted by the pancreas that helps to raise blood glucose levels by stimulating the liver to break down glycogen into glucose and release it into the bloodstream. It does the opposite of insulin, which lowers blood glucose levels by promoting the uptake of glucose into cells. Therefore, glucagon is necessary to maintain blood glucose levels while a person is sleeping and not consuming food. Aldosterone is a hormone that regulates sodium and potassium levels in the body and has no direct role in glucose regulation. Thyroxin is a hormone secreted by the thyroid gland that regulates metabolic rate and has no direct role in glucose regulation. Insulin is involved in blood glucose regulation, but it is not the hormone secreted during periods of fasting, as it promotes glucose uptake into cells and reduces blood glucose levels.

Phil Is a Healthy College Student