Question

Choose the correct route of oxygenated blood in the body starting from its oxygenation:

• A. Lungs →Pulmonary artery →Left atrium →Left ventricle →Aorta →Tissues →Vena cava→Right atrium→ Right ventricle →Pulmonary vein→Lungs
  
• B. Lungs →Pulmonary vein →Left atrium →Left ventricle →Aorta →Tissues →Pulmonary artery →Right atrium→ Right ventricle →Vena cava→Lungs
  
• C. Lungs →Pulmonary vein →Left atrium →Left ventricle →Aorta →Tissues →Vena cava→Right atrium→ Right ventricle →Pulmonary artery→Lungs
• D. Lungs →Pulmonary artery →Left atrium →Left ventricle →Aorta →Tissues →Vena cava→Right atrium→ Right ventricle →Pulmonary artery→Tissues
  

Answer 1

The correct option is C Lungs →Pulmonary vein →Left atrium →Left ventricle →Aorta →Tissues →Vena cava→Right atrium→ Right ventricle →Pulmonary artery→Lungs

The circulation of blood in human body is of two types:

- Systemic circulation: The system of blood vessels that ensures the supply of oxygenated blood from the left ventricle to all the body organs and return of deoxygenated blood to the right atrium is called systemic circulation.

- Pulmonary circulation: The system of regular oxygenation of blood returning to the right atrium is carried out by arteries carrying deoxygenated blood from the right ventricle to the lungs and pulmonary vein bringing back the oxygenated blood to the left atrium is called pulmonary circulation.

Right side of the heart: deoxygenated blood
Left side of the heart: oxygenated blood

• Deoxygenated blood is taken to the lungs by pulmonary artery.
• Oxygenated blood is pumped from the heart into the aorta.
• Deoxygenated blood is brought back to the heart by vena cava
• Oxygenated blood is brought back to the heart by pulmonary vein