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Human Circulatory System
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In which of the following points pulmonary artery is different from pulmonary vein?
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A
Its wall is thick.
💡 Explanation:
The pulmonary artery carries deoxygenated blood from the heart to the lungs while the pulmonary vein carries oxygenated blood from the lungs to the heart. A pulmonary artery has a smaller lumen and thicker walls as compared to a pulmonary vein.
Thus, the correct answer is 'Its wall is thick.'