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

Options

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

Explanation

To answer the question "Which of the following hormones helps in the secretion of HCl from the stomach?", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Role of Hormones in Digestion**:
- Understand that hormones play a crucial role in the digestive process by regulating the secretion of digestive juices and enzymes.

2. **Focus on HCl Secretion**:
- Recognize that hydrochloric acid (HCl) is a vital component of gastric juice, which aids in digestion within the stomach.

3. **Identify the Hormone Responsible for HCl Secretion**:
- The hormone that stimulates the secretion of HCl in the stomach is called **gastrin**.

4. **Understand the Mechanism of Gastrin Secretion**:
- Gastrin is secreted by G-cells (gastrin cells) in the stomach lining. These cells are stimulated when food particles come into contact with the mucosal layer of the stomach, particularly during the process of peristalsis.

5. **Confirm the Function of Gastrin**:
- Once released, gastrin acts on the parietal cells of the stomach to increase the secretion of HCl, thereby enhancing the digestive process.

6. **Conclude the Answer**:
- Therefore, the correct answer to the question is **gastrin**.

### Final Answer:
The hormone that helps in the secretion of HCl from the stomach is **gastrin**.

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