Multiple Choice
Which of the following correctly matches the digestive disorder with its description and/or cause?
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23. The Digestive System
Introduction to the Digestive System
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Which of the following inhibits the secretion of the gastric glands?
A
Histamine
B
Secretin
C
Gastrin
D
Pepsin
Verified step by step guidance1
Understand the role of gastric glands: Gastric glands are responsible for secreting various substances, including hydrochloric acid and digestive enzymes, which aid in digestion.
Identify the function of each option: Histamine stimulates gastric acid secretion, Gastrin also stimulates gastric acid secretion, Pepsin is an enzyme that breaks down proteins, and Secretin is a hormone that inhibits gastric acid secretion.
Focus on Secretin: Secretin is released by the small intestine in response to acidic chyme entering from the stomach. Its primary role is to regulate the pH of the small intestine by inhibiting gastric acid secretion and stimulating bicarbonate production from the pancreas.
Eliminate incorrect options: Since Histamine and Gastrin both stimulate gastric acid secretion, and Pepsin is an enzyme rather than a hormone, they do not inhibit gastric gland secretion.
Conclude with the correct answer: Secretin is the hormone that inhibits the secretion of the gastric glands, making it the correct answer to the problem.
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