Question

Which of the following options represent correct systemic circulation in human being?

• A. $Leftventricle\underset{blood}{\overset{Deoxygenated}{\to }}Tissues\underset{blood}{\overset{Oxygenated}{\to }}Rightventricle$
• B. $Rightventricle\underset{blood}{\overset{Oxygenated}{\to }}Tissues\underset{blood}{\overset{Dexygenated}{\to }}Rightauricle$
• C. $Leftventricle\underset{blood}{\overset{Deoxygenated}{\to }}Tissues\underset{blood}{\overset{Oxygenated}{\to }}Rightauricle$
• D. $Leftventricle\underset{blood}{\overset{Oxygenated}{\to }}Tissues\underset{blood}{\overset{Deoxygenated}{\to }}Rightauricle$

Answer 1

The correct option is D $Leftventricle\underset{blood}{\overset{Oxygenated}{\to }}Tissues\underset{blood}{\overset{Deoxygenated}{\to }}Rightauricle$

The correct answer is D.

Oxygen-rich blood flows from the lungs back into the left atrium or the left upper chamber of the heart, through four pulmonary veins.

Oxygen-rich blood then flows through the mitral valve into the left ventricle, or the left lower chamber. The left ventricle pumps the oxygen-rich blood through the aortic valve into the aorta, the main artery that takes oxygen-rich blood out to the rest of the body.

Oxygen-poor blood returns from the body to the heart through the superior vena cava and inferior vena cava, the two main veins that bring blood back to the heart. The oxygen-poor blood enters the right atrium, or the right upper chamber of the heart.