Final answer:
The circulatory and respiratory systems work together to facilitate gas exchange and maintain homeostasis in the body.
Step-by-step explanation:
The function of the circulatory and respiratory systems is to facilitate gas exchange and maintain homeostasis in the body. The circulatory system, consisting of the heart, blood vessels, and blood, transports oxygen from the respiratory system to the body tissues and removes carbon dioxide. The respiratory system, which includes the lungs and airways, enables the exchange of gases between the body and the outside air. These two systems work together to ensure that oxygen is delivered to cells and carbon dioxide is eliminated from the body.