Question

Oxygenated blood returns from the lungs to the heart through:

• A. Pulmonary vein
• B. Coronary vein
• C. Pulmonary artery
• D. Coronary artery

Answer 1

The correct option is A

Pulmonary vein

The correct option is A.

Explanation of the correct answer:

1. Pulmonary veins are the largest veins.
2. They play an essential role by receiving blood that has been oxygenated in the alveoli and returning it to the left atrium.
3. These veins transport filtered or oxygenated blood from the lungs to the heart.

Explanation of the incorrect options:

Option B:

The coronary vein carries deoxygenated blood to the chambers of the heart from the myocardium.

Option C:

The pulmonary artery carries deoxygenated blood to the lungs from the right ventricle.

Option D:

The coronary artery carries oxygenated blood from the chambers of the heart to the heart muscles.

Final answer: Oxygenated blood returns from the lungs to the heart through the pulmonary vein.