Multiple Choice
How do the endocrine and nervous systems differ in terms of their signaling mechanisms?
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16. The Endocrine System
Introduction to the Endocrine System
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Which of the following statements regarding glucagon is NOT true?
A
Glucagon increases blood glucose levels by promoting glycogen breakdown.
B
Glucagon is secreted by the alpha cells of the pancreas.
C
Glucagon secretion is stimulated by low blood glucose levels.
D
Glucagon is primarily involved in lowering blood glucose levels.
Verified step by step guidance1
Understand the role of glucagon in the body: Glucagon is a hormone that plays a crucial role in glucose metabolism. It is primarily responsible for increasing blood glucose levels.
Identify where glucagon is produced: Glucagon is secreted by the alpha cells of the pancreas, which is an important detail in understanding its function.
Recognize the conditions that stimulate glucagon secretion: Glucagon secretion is typically stimulated by low blood glucose levels, as the body needs to increase glucose availability.
Analyze the effect of glucagon on glycogen: Glucagon promotes the breakdown of glycogen into glucose in the liver, a process known as glycogenolysis, which helps increase blood glucose levels.
Evaluate the statement about glucagon lowering blood glucose: Since glucagon's primary function is to increase blood glucose levels, the statement that it is involved in lowering blood glucose is incorrect.
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