Answer the following:
What is myoglobin? Where is it present.

Explanation

**Step-by-Step Solution:**

1. **Definition of Myoglobin**: Myoglobin is a small protein that plays a crucial role in muscle physiology.

2. **Function of Myoglobin**: Myoglobin binds to oxygen, which is essential for cellular respiration and energy production in muscle cells.

3. **Location of Myoglobin**: Myoglobin is primarily found in heart and skeletal muscles.

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