MICROANATOMY

Detailed explanation-1: -The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium. From the left atrium blood flows into the left ventricle. The left ventricle pumps the blood to the aorta which will distribute the oxygenated blood to all parts of the body.

Detailed explanation-2: -Pulmonary veins are blood vessels that carry oxygen-rich blood from your lungs to your heart. Your pulmonary veins are part of your body’s pulmonary circuit. This is a system of blood vessels that moves blood between your heart and your lungs. This circuit also includes your pulmonary arteries.

Detailed explanation-3: -The blood returning to the heart from the lungs via the pulmonary vein has more oxygen per ml of blood. Pulmonary vein carries oxygenated blood from the lungs to the heart. Pulmonary Artery carries deoxygenated blood from the heart to lungs.