MICROANATOMY

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: -The right side of the heart The right upper chamber (atrium) takes in deoxygenated blood that is loaded with carbon dioxide. The blood is squeezed down into the right lower chamber (ventricle) and taken by an artery to the lungs where the carbon dioxide is replaced with oxygen.

Detailed explanation-3: -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-4: -Pulmonary artery is the only artery that carries carbon dioxide rich blood to lungs for re-oxygenation.

Detailed explanation-5: -Veins carry carbon dioxide-rich or deoxygenated blood from all parts of the body back to the heart.