What is the main function of muscles?

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Muscles**: Muscles are specialized tissues in the body that are primarily responsible for movement. They are made up of muscle fibers, which are specialized cells.

2. **Types of Muscle Tissue**: There are three types of muscle tissue in the body: skeletal, cardiac, and smooth muscles. Each type has a specific function related to movement.

3. **Contractibility**: The main function of muscles is contractibility. This means that muscles can shorten and generate force. When muscle fibers contract, they pull on bones or internal organs.

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