Give an example of antigonistic muscles.

Explanation

**Step-by-Step Solution:**

1. **Understanding Antagonistic Muscles**: Antagonistic muscles are pairs of muscles that work against each other to create movement. When one muscle contracts (the agonist), the other muscle (the antagonist) relaxes.

2. **Identifying a Common Example**: A well-known example of antagonistic muscles in the human body is the biceps and triceps.

3. **Function of Biceps and Triceps**:
- **Biceps**: The biceps muscle is located on the front of the upper arm. When the biceps contracts, it causes the arm to bend at the elbow.
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