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Let’s Recapitulate
Identify me!
1. I am like a filter that remove waste like urine. ______________
2. A am a muscular organ that pumps blood. ______________
3. My job is to remove waste from the body. ______________
4. We are thin tube-like structures in excretory system. ______________
5. I am the smallest blood vessel. ______________
LET’S
REVISE
• The circulatory system like heart, blood and vessels help to transport substances
inside our body.
• The heart is about the size of a closed fist. It is placed between the lungs, a little
towards the left side of the body.
• Arteries are divided into arterioles and capillaries.
• Arteries carry oxygenated blood.
• Veins carry deoxygenated blood.
• Blood transports nutrients, oxygen, carbon dioxide and water.
• Kidneys, ureters, urinary bladder and urethra are organs of the excretory system.
• Kidneys filter out harmful waste.
Let’s Pronounce Together
circulatory excretory veins arteries capillaries
urethra ureter urinary bladder
Glossary
• Circulatory system : It helps to transport substances to different parts of the
body.
• Excretory system : It helps to remove waste from the body.
50 Active Science-4

