Arteries are the blood vessels that emanate from the heart to the capillaries throughout the body and within the lung tissue. Compared to veins, arteries are characterized by a thin lumen, elasticity, and high pressure. The blood that flows in the arteries is the blood that is pumped from the heart and exchanged with the capillaries throughout the body and in the lung tissue. The arteries of the heart can be divided into two categories: 1. arteries connected to the left ventricle and arteries connected to the right ventricle. The blood in the arteries connected to the left ventricle is oxygenated blood that has been exchanged for gases in the capillaries of the lungs, so this blood is characterized by a high oxygen content and a bright red color, and this blood has to go to the tissues and organs of the whole body for the exchange of substances and gases. 2. The blood in the arteries connected to the right ventricle is venous blood that has been exchanged for gases in the capillaries of the whole body, so this blood is characterized by a low oxygen content and a dark red color, and this blood has a low oxygen content and a dark red color, These bloods are characterized by low oxygen content, dark red color, etc. These bloods need to go to the lungs for re-oxygenation and gas exchange.