Question

Choose the correct option which properly represents pulmonary circulation in humans.

• A. Right Ventricle $\underset{\text{Blood}}{\overset{\text{Deoxygenated}}{\to }}$ Lungs $\underset{\text{Blood}}{\overset{\text{Oxygenated}}{\to }}$ Left Auricle
• B. Right Ventricle $\underset{\text{Blood}}{\overset{\text{Oxygenated}}{\to }}$ Lungs $\underset{\text{Blood}}{\overset{\text{Deoxygenated}}{\to }}$ Left Auricle
• C. Left Auricle $\underset{\text{Blood}}{\overset{\text{Oxygenated}}{\to }}$ Lungs $\underset{\text{Blood}}{\overset{\text{Deoxygenated}}{\to }}$ Right Ventricle
• D. Left Auricle $\underset{\text{Blood}}{\overset{\text{Deoxygenated}}{\to }}$ Lungs $\underset{\text{Blood}}{\overset{\text{Oxygenated}}{\to }}$ Right Ventricle

Answer 1

The correct option is A Right Ventricle $\underset{\text{Blood}}{\overset{\text{Deoxygenated}}{\to }}$ Lungs $\underset{\text{Blood}}{\overset{\text{Oxygenated}}{\to }}$ Left Auricle

The blood pumped by the right ventricle enters the pulmonary artery, whereas the left ventricle pumps blood into the aorata. The deoxygenated blood pumped into the pulmonary artery is passed onto the lungs from where the oxygenated blood is carried by pulmonary veins into the left atrium/auricle. This pathway constitutes the pulmonary circulation. Hence, correct pathway is:

Right Ventricle $\underset{\text{Blood}}{\overset{\text{Deoxygenated}}{\to }}$ Lungs $\underset{\text{Blood}}{\overset{\text{Oxygenated}}{\to }}$ Left Auricle