Distinguish between pulmonary artery and pulmonary vein?

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Mar 6, 2018

Answer:

Pulmonary arteries are one pair in number (branching out from pulmonary trunk) while pulmonary veins are two pair in number, one pair from each lung.

Explanation:

  • Pulmonary artery takes away blood from heart to lung of respective side. Pulmonary veins drain blood from lung (one pair from each side) to heart.

  • Blood in pulmonary artery is deoxygenated, blood in pulmonary vein is oxygenated.

  • Pulmonary artery carries blood from right ventricle of heart. Pulmonary vein carries blood towards left auricle of heart.

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  • Blood pressure within pulmonary artery is higher than that in pulmonary vein.
  • Wall of pulmonary artery is thick and elastic, wall of pulmonary vein is comparatively thinner.
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