ANATOMY

Detailed explanation-1: -Oxygen-deficient, carbon dioxide-rich blood returns to the right side of the heart through two large veins, the superior vena cava and the inferior vena cava. Then the blood is pumped through the pulmonary artery to the lungs, where it picks up oxygen and releases carbon dioxide.

Detailed explanation-2: -Veins carry blood rich in carbon dioxide. This type of blood is also known as deoxygenated blood as all the oxygen from it has been transferred to the cells and the carbon dioxide released by the cells is absorbed into the blood.

Detailed explanation-3: -The pulmonary artery is a big artery that comes from the heart. It splits into two main branches, and brings blood from the heart to the lungs. At the lungs, the blood picks up oxygen and drops off carbon dioxide. The blood then returns to the heart through the pulmonary veins.

Detailed explanation-4: -The blood vessel which carries blood rich in carbon dioxide is known as an artery.

Detailed explanation-5: -Lungs: In your lungs, your blood refills its oxygen supply and gets rid of carbon dioxide. Pulmonary veins: Your pulmonary veins do the opposite job of your pulmonary arteries. They collect oxygen-rich blood and carry it from your lungs to your heart.