Gastric juice of adult humans is without

Options

A. HCl
B. Pepsinogen
C. Rennin
D. All of the above

Answer

To solve the question regarding what is absent in the gastric juice of adult humans, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Gastric Juice Composition**: Gastric juice is secreted by gastric glands in the stomach. It contains various components that aid in digestion.

2. **Identify the Types of Cells in Gastric Glands**: The gastric glands have three main types of cells:
- **Parietal Cells**: These cells secrete hydrochloric acid (HCl) and intrinsic factor (IF).
- **Chief Cells (Peptic Cells)**: These cells secrete pepsinogen, an inactive enzyme that is activated to pepsin by HCl.

3. **List the Components of Gastric Juice**: From the above cells, we can conclude that gastric juice contains:
- Hydrochloric acid (HCl)
- Intrinsic factor (IF)
- Pepsinogen (which gets converted to pepsin)

4. **Identify the Absent Component**: The question asks for what is not present in the gastric juice of adult humans. One enzyme that is present in infants but not in adults is **renin**, which helps in the digestion of milk proteins.

5. **Conclusion**: Therefore, the correct answer to the question is that gastric juice of adult humans is without **renin**.

### Final Answer:
Gastric juice of adult humans is without **renin**.

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