Blood rich with oxygen (especially after coming out of the lungs) is said to be __.
Blood containing a higher concentration of oxygen compared to carbon dioxide is said to be oxygenated (filled with oxygen).
Oxygen-rich blood from the lungs comes to the thin-walled upper chamber of the heart to ______.
Which of the following is correct about the pulmonary artery?
I : It contains oxygen rich blood
II : It contains carbon dioxide rich blood
III : It carries blood pumped from the heart to lungs
IV : It carries blood from the lungs to the heart