Which of the following hormone helps in secretion of HCI from stomach?

Options

A. renin
B. gastrin
C. secretin
D. somatomedin

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which hormone is responsible for the secretion of hydrochloric acid (HCl) in the stomach.

2. **Analyzing the Options**: We have several options to consider:
- **Renin**: This hormone is primarily involved in the regulation of blood pressure and fluid balance in the excretory system.
- **Gastrin**: This hormone is secreted by G-cells in the stomach and is known to stimulate the secretion of HCl from parietal cells.
- **Secretin**: This hormone is produced in the small intestine and primarily stimulates the pancreas to release bicarbonate, not involved in HCl secretion.
- **Somatomedin**: This hormone is associated with promoting cell division and growth, not related to gastric acid secretion.

3. **Identifying the Correct Option**:
- After analyzing the functions of each hormone, we find that **Gastrin** is the hormone that directly stimulates the parietal cells in the stomach to secrete HCl. Therefore, it is the correct answer.

4. **Conclusion**: The hormone that helps in the secretion of HCl from the stomach is **Gastrin**.

**Final Answer**: Gastrin

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