Multiple Choice
Which hormones help maintain a relatively constant calcium concentration in the blood?
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16. The Endocrine System
Introduction to the Endocrine System
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Which of the following triggers the release of glucagon?
A
Increased insulin levels
B
Low blood glucose levels
C
Elevated blood calcium levels
D
High 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 by promoting the conversion of glycogen to glucose in the liver.
Identify the conditions that stimulate glucagon release: Glucagon is typically released in response to low blood glucose levels, which is a state of hypoglycemia.
Analyze the options provided: Consider each option and determine whether it would lead to an increase or decrease in blood glucose levels.
Evaluate 'Increased insulin levels': Insulin is a hormone that lowers blood glucose levels, so increased insulin would not trigger glucagon release.
Evaluate 'Low blood glucose levels': This condition directly triggers the release of glucagon to raise blood glucose levels, making it the correct answer.
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