Pulmonary arteries
Deoxygenated. The blood is carried by the pulmonary arteries from the heart to the lungs to replenish the oxygen.
Arteries carry blood away from the heart and veins carry blood into the heart. Blood moving from the heart to the lungs through the pulmonary artery has less oxygen than blood moving from the lungs to the heart through the pulmonary vein, but most arteries carry oxygen-rich blood with little carbon dioxide, and most veins carry deoxygenated blood with carbon dioxide and other wastes.
oxygen-poor blood to the lungs to get more oxygen and to release unneeded carbon dioxide for the lungs to remove
No, they carry blood rich with oxygen away from the heart to all the body.
Pulmonary arteries
The gases that are exchanged are oxygen and carbon dioxide.
Oxygen and carbon dioxide are exchanged at the surface of the air sac. Oxygen is taken in from the air into the bloodstream, while carbon dioxide is released from the bloodstream into the air to be exhaled.
alveolus
oxygen and carbon dioxide are exchanged in alveoli (singular alveolus).
diffusion
Arteries to arterioles to capillaries where exchange occurs. Oxygen and nutrients are exchanged for carbon dioxide and wastes.
Deoxygenated. The blood is carried by the pulmonary arteries from the heart to the lungs to replenish the oxygen.
Oxygen is exchanged from the air in the alveoli into the blood in the capillaries, while carbon dioxide is exchanged from the blood in the capillaries into the air in the alveoli during the process of respiration.
Capillaries are the small blood vessels where oxygen is exchanged for carbon dioxide. They are located throughout the body and allow for the exchange of gases between the blood and tissues.
Carbon dioxide
The gases that are exchanged are oxygen and carbon dioxide.