Enzyme activator of pepsinogen, prorennin is secreted from

Options

A. peptic cells
B. oxyntic cells
C. zymogen cells
D. chief cells

Answer

To answer the question about where the enzyme activator of pepsinogen and prorennin is secreted from, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Enzymes**: Understand that pepsinogen and prorennin are both proteolytic enzymes. Pepsinogen is the inactive form of pepsin, and prorennin is involved in the digestion of milk proteins in infants.

2. **Know the Source**: Recognize that these enzymes are produced in the gastric glands of the stomach. The gastric glands contain different types of cells that have specific functions.

3. **Types of Cells in Gastric Glands**:
- **Mucous Neck Cells**: These cells secrete mucus to protect the stomach lining from hydrochloric acid (HCl).
- **Chief Cells (Peptic Cells)**: These cells secrete pepsinogen, the inactive precursor of pepsin.
- **Parietal Cells (Auxentic Cells)**: These cells secrete hydrochloric acid (HCl) and intrinsic factor.

4. **Role of HCl**: HCl is crucial as it activates pepsinogen into pepsin and prorennin into renin. This means that the activation of these enzymes is dependent on the presence of HCl.

5. **Conclusion**: Since the question asks for the source of the enzyme activator for pepsinogen and prorennin, and we have established that HCl is produced by the parietal cells (auxentic cells), we can conclude that the activator is secreted from the auxentic cells.

### Final Answer:
The enzyme activator of pepsinogen and prorennin is secreted from **B. Auxentic cells**.

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