1. Which organ pumps blood throughout the body?
2. Which system controls and coordinates body activities?
3. Which organ is mainly responsible for respiration?
4. Which part of the brain controls balance?
5. Which blood cells fight infection?
6. Which system is responsible for digestion of food?
7. Which organ filters blood in the human body?
8. Which part carries oxygen in blood?
9. Which system transports nutrients and oxygen?
10. Which organ produces bile?
11. Which system removes waste from the body?
12. What is the basic unit of the human body?
13. Which organ stores urine?
14. Which organ helps in digestion by secreting enzymes?
15. Which system helps in movement of the body?
16. Which gas is expelled during respiration?
17. Which organ controls thinking and memory?
18. Which system includes bones?
19. What connects bones to muscles?
20. Which part of the digestive system absorbs nutrients?
