Question

Oxygenated blood is carried by
A. Pulmonary vein
B. Pulmonary artery
C. Renal vein
D. Hepatic portal vein

Answer 1

Hint:- The circulatory system or the cardiovascular system allows blood to circulate all over the body and carries oxygen and carbon dioxide and other organic molecules through it. Blood reaches tissue spaces to reach oxygen in the tissue spaces and cells and binds to carbon dioxide produced by the cells and tissues.

Complete Answer:- Blood carrying oxygen is known as oxygenated blood whereas blood carrying carbon dioxide are called deoxygenated blood. Oxygenated blood after entering the heart, leaves the heart chamber and then pumped out to the tissue spaces and cells. On the other hand deoxygenated blood from all over the body gets collected in the heart to reach to lungs for exchange of oxygen and carbon dioxide.

Blood vessels that carry blood from tissue spaces to the heart are generally called veins and those which carry blood from the heart to tissues are generally known as arteries. Pulmonary vein carries freshly oxygenated blood from the lungs and transfers to the left atria of the heart. On the contrary, Pulmonary artery transfers deoxygenated blood from the right ventricle of the heart to the capillaries of the lungs. Renal vein connects kidneys to inferior vena cava and drains out oxygen-depleted blood from the kidneys. The hepatic portal vein delivers venous blood into the liver.

Hence it is clear that the correct option is “A” – pulmonary vein.

Note:- The most unique feature of the hepatic portal vein is that it receives both oxygenated and partially deoxygenated blood. Hepatic portal vein attributes to the portal blood pressure by lowering the blood pressure level than other parts of the body. In an abnormal condition called Portal hypertension, the blood pressure rises too high in the portal venous system and results in cirrhosis of the liver.