Multiple Choice
Which of the following glands secrete hormones that regulate male reproductive functions?
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16. The Endocrine System
Introduction to the Endocrine System
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How does the release of glucagon affect blood glucose levels?
A
It decreases blood glucose levels by promoting glucose uptake in cells.
B
It increases blood glucose levels by stimulating glycogen breakdown in the liver.
C
It decreases blood glucose levels by inhibiting insulin secretion.
D
It has no effect on blood glucose levels.
Verified step by step guidance1
Understand the role of glucagon: Glucagon is a hormone produced by the alpha cells of the pancreas. Its primary function is to increase blood glucose levels.
Identify the mechanism of action: Glucagon stimulates the liver to convert stored glycogen into glucose, a process known as glycogenolysis.
Consider the effect on blood glucose levels: By promoting glycogen breakdown, glucagon increases the amount of glucose released into the bloodstream.
Contrast with insulin: Insulin, another pancreatic hormone, has the opposite effect by promoting glucose uptake in cells, thereby decreasing blood glucose levels.
Evaluate the options: The correct answer is that glucagon increases blood glucose levels by stimulating glycogen breakdown in the liver.
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