Which of the function is the function of adrenaline?

Options

A. Helps in the gastric juice secretion
B. Increases heart rate and blood pressure
C. Increases blood calcium
D. Helps in milk secretion

Answer

### Step-by-Step Solution:

1. **Understanding Adrenaline**: Adrenaline, also known as epinephrine, is a hormone produced by the adrenal glands. It plays a crucial role in the body's response to stress, often referred to as the "fight or flight" response.

2. **Analyzing the Options**:
- **Option 1: Help in gastric juice secretion**: This is incorrect. The hormone responsible for stimulating gastric juice secretion is gastrin, not adrenaline.
- **Option 2: Increases heart rate and blood pressure**: This is correct. Adrenaline increases heart rate and blood pressure as part of the body's response to stress or danger.
- **Option 3: Increases blood calcium**: This is incorrect. The hormone that primarily increases blood calcium levels is parathyroid hormone (PTH).
- **Option 4: Helps in milk secretion**: This is incorrect. Prolactin is the hormone that is responsible for milk secretion.

3. **Conclusion**: Based on the analysis of the options, the function of adrenaline is best described by **Option 2: Increases heart rate and blood pressure**.

### Final Answer:
The function of adrenaline is to **increase heart rate and blood pressure**.

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