How do the lungs and heart transport oxygen in the cardiorespiratory system?
The lungs and heart work together in the cardiorespiratory system to transport oxygen to the body. Here’s how it works:
1. During breathing, the lungs bring in oxygen from the air we inhale.
2. The oxygen is then transported to the heart through blood vessels.
3. The heart pumps the oxygen-rich blood through the arteries to the body's tissues and organs.
4. The oxygen is delivered to the cells in the body, where it is used for energy production.
5. Carbon dioxide, a waste product of metabolism, is then transported back to the lungs to be expelled during exhalation.
Through this process, the lungs and heart work together to ensure that the body has enough oxygen for its metabolic processes, making physical activity possible.