Question

Which of the following are correctly matched?

1. Lungs	Purifies blood
2. Arteries	Deoxygenated blood
3. Sthethoscope	Heart beat

• A. Only 1
• B. Both 1 and 2
• C. Both 2 and 3
• D. Both 1 and 3

Answer 1

The correct option is D Both 1 and 3

Lungs purify the blood coming from the heart. They remove carbon dioxide from the blood and adds oxygen to it. This oxygen-rich blood is then pumped by the heart to all the organs.

Arteries are the blood vessels that carry oxygenated blood. They carry oxygen-rich blood from the heart to all the organs.

Stethoscope is the instrument used to listen to the sounds made by the heart.