Final answer:
The circulatory system works with the respiratory and digestive systems to transport gases and nutrients throughout the body and is essential for maintaining homeostasis.
Step-by-step explanation:
The system that interacts with the respiratory and digestive systems to transport gases and nutrients throughout the body is the circulatory system. The respiratory system exchanges gases like oxygen and carbon dioxide at the alveoli—a process that requires the circulatory system to carry these gases to and from the cells. Similarly, nutrients absorbed by the digestive system enter the bloodstream to be transported to various cells and tissues. The circulatory system is vital for maintaining homeostasis, as it distributes essential substances and removes waste products.