MICROANATOMY

Detailed explanation-1: -The Deoxygenated blood from the various parts of the body returns to the right half of the heart, via the vena cava. This deoxygenated blood is carried to the lungs for oxygenation through the pulmonary artery. It is then pumped to the heart via the pulmonary vein for circulation to various tissues.

Detailed explanation-2: -Veins. Veins have one-way valves instead of muscles, to stop blood from running back the wrong way. Generally, veins carry deoxygenated blood from the body to the heart, where it can be sent to the lungs.

Detailed explanation-3: -Blood vessels which carry deoxygenated blood are called veins except for the pulmonary vein.