Do muscles both push and pull the bone?

Explanation

**Step-by-Step Solution:**

1. **Understanding Muscle Function**: Muscles are responsible for movement in the body. They can only pull on bones, not push them. This is a fundamental aspect of how muscles operate.

2. **Muscle Contraction**: When a muscle contracts, it shortens and pulls the bone towards itself. This action is known as pulling. For example, when you bend your arm, the bicep muscle contracts and pulls the forearm up.

3. **Muscle Relaxation**: When a muscle relaxes, it lengthens and does not exert force on the bone. During this phase, the muscle returns to its original state, allowing the bone to move back to its starting position.

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