2. Which muscles are called voluntary muscles? 3. What do heart muscles do?

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2. **Voluntary Muscles:**
   Voluntary muscles are those muscles that are under conscious control. They are primarily skeletal muscles, which are attached to bones and are responsible for movements of the body. When you decide to move a part of your body, such as your arm or leg, you are using voluntary muscles. These muscles are characterized by their striated appearance and are controlled by the somatic nervous system.

3. **Heart Muscles:**
   Heart muscles, also known as cardiac muscles, are specialized muscles found only in the heart. Their primary function is to pump blood throughout the body. Cardiac muscles are involuntary, meaning they operate without conscious control. They contract rhythmically and continuously to maintain blood circulation, ensuring that oxygen and nutrients are delivered to tissues and organs while also helping to remove waste products. The unique structure of cardiac muscle cells allows them to contract in a coordinated manner, which is essential for effective heart function.
2. **Voluntary Muscles:** These are muscles you can control consciously, like moving your arms or legs. 3. **Heart Muscles:** These are muscles in your heart that pump blood automatically without you thinking about it.

2. Which muscles are called voluntary muscles? 3. What do heart muscles do?

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