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GS Paper IUPSC Prelims 2003
Health & Medicine
Question No. 453Interactive Test Mode
00:00
+2-0.66

Q453. With reference to normal human beings, consider the following statements: 1. In response to the presence of HCl, secretin is produced from the duodenum. 2. Enterogastrone is produced in the small intestine in response to the presence of fatty acids. Which of these statements is/are correct?

With reference to normal human beings, consider the following statements:

  1. In response to the presence of HCl, secretin is produced from the duodenum.
  2. Enterogastrone is produced in the small intestine in response to the presence of fatty acids. Which of these statements is/are correct?
Select the correct option below (or cross out options to eliminate)
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Official Answer Key & Detailed Solution

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Official UPSC Answer KeyUPSC Prelims 2003 • Science and Technology

Correct Answer: Option (C) — Both 1 and 2

Concept & Option Breakdown

Standard Reference Verified

Statement 1 is correct: When acidic chyme containing HCl enters the duodenum, the drop in pH stimulates duodenal S-cells to secrete the hormone secretin, which triggers the pancreas to release bicarbonate-rich fluid to neutralize acidity. Statement 2 is correct: Enterogastrone (a family of gastrointestinal hormones including CCK and GIP) is secreted by the duodenal mucosa in response to the presence of fats/fatty acids, inhibiting gastric motility and gastric acid secretion to slow digestion.

Elimination Heuristic & Exam Approach

Both statements describe standard endocrine feedback mechanisms regulating digestive enzymes and motility in the duodenum.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2003 (Q453)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (C) — Both 1 and 2

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Frequently Asked Questions — UPSC Prelims 2003 Q453

What is the official answer for UPSC Prelims 2003 GS Paper I Question 453 (Science and Technology)?

The official UPSC answer key for this 2003 Science and Technology (Health & Medicine) question is Option (C): "Both 1 and 2". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2003 question belong to?

This question belongs to GS Paper I under the subject "Science and Technology" and micro-topic "Health & Medicine". You can explore all repeated questions from Health & Medicine in Acme AI's 3D Prelims PYQ Realm or practice 50 full-length and sectional tests in the APT Prelims Test Series.

How can I solve this Health & Medicine UPSC Prelims question using option elimination?

Both statements describe standard endocrine feedback mechanisms regulating digestive enzymes and motility in the duodenum.

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