Total number of muscles in human body are

Options

A. 256 muscles
B. 639 muscles
C. 400 muscles
D. 421 muscles

Answer

To determine the total number of muscles in the human body, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Muscles**: Muscles are soft tissues in the human body that are capable of contracting. They are essential for movement.

2. **Types of Muscles**: The human body has three types of muscles: skeletal, smooth, and cardiac. However, when referring to the total number of muscles, we primarily focus on skeletal muscles.

3. **Counting Skeletal Muscles**: The approximate number of skeletal muscles in a typical human body is about 639. These muscles are responsible for voluntary movements.

4. **Muscle Pairs**: Most skeletal muscles exist in pairs, meaning that for every muscle on one side of the body, there is a corresponding muscle on the other side. This results in approximately 320 pairs of muscles.

5. **Variability in Count**: The exact number of muscles can vary slightly from person to person due to anatomical differences, but the commonly accepted number is around 639.

6. **Conclusion**: Therefore, the total number of muscles in the human body is approximately 639.

### Final Answer:
The total number of muscles in the human body is approximately **639**.

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