Question

Differentiate between the following pair of terms:

Pulmonary artery and pulmonary vein.

Answer 1

Sr. No.	Pulmonary artery	Pulmonary vein
1.	The pulmonary artery carries Carbon-dioxide rich blood to the lungs.	The pulmonary vein carries oxygen-rich blood to the lungs.
2.	The pulmonary artery arises from the right ventricle of the heart	The pulmonary vein drains blood in the left atrium of the heart.
3.	The pulmonary artery divides into one pair of pulmonary arteries.	The pulmonary vein divides into two pairs of pulmonary veins.
4.	It carries deoxygenated blood, unlike the rest of the arteries.	It carries oxygenated blood, unlike the rest of the veins.
5.	Wall is thick and elastic.	Wall is thin.
6.	Semilunar valves are present.	Valves are absent.
7.	Blood pressure is higher.	Blood pressure is lower.