What ks the ability of the heart lungs and blood vessels to transport oxygen to muscle cells?

The ability of the heart, lungs, and blood vessels to transport oxygen to muscle cells is known as cardiovascular or aerobic fitness. This system works by the heart pumping oxygen-rich blood from the lungs through the arteries to the muscles, where oxygen is utilized for energy production. Efficient functioning of the lungs ensures adequate oxygen intake, while well-conditioned blood vessels facilitate optimal blood flow. Together, these components support sustained physical activity and overall endurance.