How do the respiratory and circulatory system work together inside the pig?

In pigs, the respiratory and circulatory systems work together to facilitate gas exchange and oxygen delivery. The respiratory system brings in oxygen from the environment into the lungs, where it diffuses into the bloodstream through the alveoli. The circulatory system then transports this oxygen-rich blood from the lungs to the heart, which pumps it throughout the body to supply tissues and organs. Simultaneously, carbon dioxide, a waste product of metabolism, is transported back to the lungs via the circulatory system to be expelled during exhalation.