Oxyntic cell produces

Options

A. Pepsin
B. Trypsin
C. Rennin
D. HCl

Answer

### Step-by-Step Solution:

1. **Identify Oxyntic Cells**: Oxyntic cells are also known as parietal cells. They are specialized cells located in the gastric epithelium of the stomach.

2. **Function of Oxyntic Cells**: The primary function of oxyntic (parietal) cells is to secrete gastric acid.

3. **Composition of Gastric Acid**: The gastric acid secreted by oxyntic cells is primarily hydrochloric acid (HCl).

4. **Stimuli for Secretion**: The secretion of hydrochloric acid is stimulated by various factors, including histamine, acetylcholine, and gastrin.

5. **Analyze the Options**:
- **Pepsin**: Produced by gastric chief cells, not oxyntic cells.
- **Trypsin**: Produced by the pancreas, not oxyntic cells.
- **Renin**: An enzyme found in ruminants, not produced by oxyntic cells.
- **HCl**: Correct answer, as it is produced by oxyntic cells.

6. **Conclusion**: Based on the analysis, the correct answer to the question "Oxyntic cell produces" is **HCl (hydrochloric acid)**.