Across
- 5. Type of blood cell involved in immune response.
- 8. The heart's main pumping chamber.
- 12. Disease-fighting protein in the bloodstream.
- 16. The fluid that flows through the circulatory system.
- 17. Scientist known for blood type discovery.
- 18. A gas expelled during respiration.
- 19. The space within the chest containing the heart and lungs.
- 21. atrium One of the four chambers of the heart.
- 24. A heart's pumping chamber.
- 25. Physical activity for health and fitness.
- 26. An abnormal condition that affects health.
- 30. A specific blood type classification.
- 34. The rhythmic beating of the heart.
- 35. A part of the body with a specific function.
- 36. Tissue that contracts to produce movement.
- 40. The system responsible for transporting blood throughout the body.
- 43. A specific blood type classification.
- 45. Largest artery in the body, carrying oxygenated blood.
- 46. Blood vessel carrying oxygenated blood from the lungs.
- 47. Medical conditions affecting the heart.
- 48. Organism that lives in or on another organism.
- 52. Essential gas for respiration.
- 53. The protein in red blood cells that carries oxygen.
- 54. One of the four chambers of the heart.
- 55. Essential building block for cells and tissues.
Down
- 1. Microscopic organisms that can cause infections.
- 2. The muscular organ that pumps blood throughout the body.
- 3. Thick-walled blood vessel that carries blood away from the heart.
- 4. Blood vessel carrying deoxygenated blood to the lungs.
- 6. rich in oxygen.
- 7. Organs for breathing and oxygen exchange.
- 9. A cylindrical stick that can be harmful to health when lit.
- 10. Discovered the circulation of blood in the body.
- 11. Eating a variety of foods to stay healthy.
- 13. Tubular structures that carry blood throughout the body.
- 14. The process of transferring blood from one person to another.
- 15. Voluntary act of giving one's blood to help others.
- 19. The movement of blood through the body.
- 20. Microscopic infectious agent.
- 22. Small cell fragment involved in blood clotting.
- 23. Group of similar cells performing a specific function.
- 27. A substance formed by a chemical process.
- 28. ventricle One of the four chambers of the heart.
- 29. The liquid component of blood.
- 31. A person who conducts scientific research.
- 32. Large vein carrying deoxygenated blood to the heart.
- 33. The continuous flow of blood throughout the body.
- 37. A classification system for blood types.
- 38. Chemical messengers in the body.
- 39. Harmful habit linked to various health issues.
- 41. Blood vessel that carries blood back to the heart.
- 42. Microscopic organisms that can be harmful or beneficial to health.
- 44. Protection against diseases and infections.
- 49. lacking oxygen.
- 50. blood cell Cells that transport oxygen in the bloodstream.
- 51. Substances needed for growth and health.