Explain how the respiratory and circulatory systems work together in humans.

The respiratory and circulatory systems work closely together to ensure the delivery of oxygen to tissues and removal of carbon dioxide from the body. The respiratory system brings oxygen into the lungs during inhalation and removes carbon dioxide during exhalation. Oxygen diffuses into the bloodstream, where it binds to hemoglobin in red blood cells. These oxygen-rich blood cells are then transported via the circulatory system to all body tissues. The circulatory system also carries carbon dioxide, a waste product of metabolism, from tissues to the lungs for exhalation. This collaboration ensures proper gas exchange and metabolic function in the body.

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