What is the main function of the pulmonary artery?

The main function of the pulmonary artery is to carry deoxygenated blood to the lungs. This is a critical step in the circulatory process, as blood that has delivered its oxygen to the body's tissues and collected carbon dioxide needs to be sent to the lungs. In the lungs, the blood releases carbon dioxide and absorbs oxygen, which is essential for maintaining the oxygen levels in the bloodstream.

This function is vital for the overall process of respiration. The pulmonary artery branches from the right side of the heart and transports the deoxygenated blood to the lungs for gas exchange. Understanding this process highlights the pulmonary artery's role in the unique pathway of blood circulation that differs from other arteries, which typically carry oxygenated blood throughout the body.