Question

Identify the FALSE statement and write the reason? i)Pulmonary artery carries blood from the heart ii)Arteries have thin wall. iii)Pulmonary vein carries oxygen rich blood from lungs to the heart *​

Answer 1

Required Answer:-

The FALSE statement is:

• i)Pulmonary artery carries blood from the heart
• ii)Arteries have thin wall. ❌
• iii)Pulmonary vein carries oxygen rich blood from lungs to the heart $.$

Explanation:-

• Pulmonary artery carries deoxygenated blood from the right ventricle to the lungs for oxygenation.
• Arteries are the blood vessels with thick and elastic walls because the blood flows at high pressure.
• Pulmonary vein carries oxygenated blood from the lungs to the left atrium of the heart.
• Basically, Pulmonary artery and pulmonary vein are the exceptions to the functions of blood vessel.

Answer 2

Given :-

1. Pulmonary artery carries blood from the heart.
2. Arteries have thin wall.
3. Pulmonary vein carries oxygen rich blood from lungs to the heart.

To identity the false statement :-

Answer :-

• Arteries have thin wall.

Explanation :-

• Pulmonary artery carries blood from the heart :- It is a true statement because it a type of artery in the pulmonary circulation which carries deoxygenated blood from right ventricle of the heart to the lungs. Exchange of gases take place in the lungs.
• Pulmonary vein carries oxygen rich blood from lungs to the heart :- It is also a true statement because these veins bring oxygen-rich blood to the left atrium, then aorta carries oxygen-rich blood to the body from the left ventricle. Called as linking vein between lungs and heart that carry oxygenated blood.

Now, why (II) Arteries have thin wall is a false statement :-

• Arteries are the blood vessels that carry oxygenated blood from heart to various organs of the body. They require thick and strong walls to overcome the pressure which is high to pump and circulate the blood, hence they need thick walls.