When you run 100 meters, what organs and physiological systems of your body are involved in this process?

When a person performs complex physical exercises, many organs and organ systems are involved. Muscles work. In our case, these are mainly the muscles of the legs. In order for them to get enough oxygen and nutrients, the lungs and heart work faster. The circulatory system, thanks to the heart, quickly saturates the cells with oxygen. In addition, more blood will flow into the muscles of the legs than into other muscles and organs, as they tense and expand. Also, while running, the musculoskeletal system is also involved.