The hormone that stimulates heart beat is

Options

A. Insulin
B. Adreanaline
C. Glucagon
D. Gastrin

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the hormone that stimulates the heartbeat.

2. **Analyzing the Options**: The options given are:
- Insulin
- Adrenaline
- Glucagon
- Gastrin

3. **Evaluating Each Option**:
- **Insulin**: This hormone is primarily responsible for regulating blood sugar levels by converting glucose to glycogen. It does not stimulate the heartbeat.
- **Gastrin**: This hormone is involved in the digestive system, stimulating gastric acid secretion. It does not play a role in heart rate.
- **Glucagon**: This hormone also regulates blood sugar levels but does so by converting glycogen back into glucose. It is not responsible for stimulating the heartbeat.
- **Adrenaline**: This hormone, produced by the adrenal glands located above the kidneys, is often referred to as the "emergency hormone." It prepares the body for stressful situations by increasing heart rate and blood pressure.

4. **Conclusion**: Based on the analysis, the hormone that stimulates the heartbeat is **Adrenaline**.

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