Q. What is the primary role of the enteric nervous system?
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A.
Regulation of blood pressure
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B.
Control of gastrointestinal motility and secretion
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C.
Coordination of respiratory rate
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D.
Regulation of heart rate
Solution
The enteric nervous system controls gastrointestinal motility and secretion, functioning independently of the central nervous system.
Correct Answer:
B
— Control of gastrointestinal motility and secretion
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Q. What triggers the gastrocolic reflex?
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A.
Presence of food in the stomach
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B.
Release of bile
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C.
Absorption of nutrients
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D.
Secretion of insulin
Solution
The gastrocolic reflex is triggered by the presence of food in the stomach, stimulating peristalsis in the colon.
Correct Answer:
A
— Presence of food in the stomach
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Q. Which hormone stimulates the secretion of gastric acid?
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A.
Insulin
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B.
Gastrin
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C.
Secretin
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D.
Cholecystokinin
Solution
Gastrin is the hormone that stimulates the secretion of gastric acid from the parietal cells in the stomach.
Correct Answer:
B
— Gastrin
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Q. Which part of the gastrointestinal tract is primarily responsible for nutrient absorption?
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A.
Stomach
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B.
Small intestine
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C.
Large intestine
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D.
Esophagus
Solution
The small intestine is primarily responsible for the absorption of nutrients due to its large surface area and specialized structures.
Correct Answer:
B
— Small intestine
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