The human body contains approximately 640 skeletal muscles. However, the exact number can vary slightly from person to person due to anatomical differences. These muscles are responsible for movement, posture, and various functions within the body.
Skeletal muscles are voluntary muscles, meaning they are under conscious control and work in pairs. When one muscle contracts, its counterpart on the opposite side of a joint relaxes, allowing for coordinated movements. In addition to skeletal muscles, the human body also has smooth muscles (found in organs) and cardiac muscles (the heart), which function involuntarily.
In summary, while the number of skeletal muscles is generally around 640, it’s essential to recognize that the body also relies on different types of muscles for various functions.