Question

Blood pressure in the pulmonary artery is:

• A. Same as that in the aorta
• B. More than that in the carotid
• C. More than that in the pulmonary vein
• D. Less than that in the venae cavae

Answer 1

The correct option is C More than that in the pulmonary vein

Blood pressure in pulmonary arteries is more than that in pulmonary veins because pulmonary arteries are small with narrow lumen, thus blood pressure is more in them. On the other hand, pulmonary veins are large blood vessels having wider lumen, thus blood pressure is less in them.