Question

Match List-I with List-II
\begin{tabular{ll} List-I (Gastric cells) & List-II (Secretion)
(A) G cells & (I) Somatostatin
(B) D cells & (II) Pepsinogen
(C) Parietal cells & (III) Gastrin
(D) Chief cells & (IV) Gastric acid (HCl)

Choose the correct answer from the options given below:

• (A) - (II), (B) - (IV), (C) - (III), (D) - (I)
• (A) - (I), (B) - (III), (C) - (IV), (D) - (II)
• (A) - (III), (B) - (I), (C) - (IV), (D) - (II)
• (A) - (III), (B) - (IV), (C) - (II), (D) - (I)

Hint:

Remember these simple cell-secretion pairings: G cells \(\rightarrow\) Gastrin.
Chief cells \(\rightarrow\) Pepsinogen (the chief digestive enzyme precursor).
Parietal cells \(\rightarrow\) Hydrochloric acid (HCl).

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
The stomach lining contains specialized cells that secrete hormones, acid, and enzymes to regulate and carry out digestion.

Step 2: Detailed Explanation:
Let us match each gastric cell type with its secretion:
- (A) G cells: Found in the antrum of the stomach, these endocrine cells secrete the hormone Gastrin (III), which stimulates gastric acid production.
- (B) D cells: Found in the stomach, intestine, and pancreas, these cells secrete Somatostatin (I), an inhibitory hormone that reduces gastric acid secretion.
- (C) Parietal (oxyntic) cells: Located in the gastric glands, these cells secrete Gastric acid (HCl) (IV) to lower stomach pH and intrinsic factor for vitamin B12 absorption.
- (D) Chief (peptic) cells: Located in the gastric glands, these cells secrete the inactive proenzyme Pepsinogen (II), which is converted to active pepsin by stomach acid to digest proteins.
This gives the sequence: (A)-(III), (B)-(I), (C)-(IV), (D)-(II).

Step 3: Final Answer:
The correct matching sequence is (A) - (III), (B) - (I), (C) - (IV), (D) - (II), corresponding to Option (C).