DNA and RNA are key to this puzzle that helps middle schoolers review basic protein synthesis terms like 'codon' and 'enzyme' with clear, simple clues.
Human Circulatory System Crossword Puzzle for Middle School is a medium crossword puzzle with 19 clues covering . Play it online for free below, or create your own crossword with our free crossword maker.
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Human Circulatory System Crossword Puzzle for Middle School
Explore the human circulatory system with this medium-difficulty crossword puzzle designed for grades 6-8. Learn key terms like heart, arteries, veins, and oxygen.
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Across
- 1. Small vein that collects blood from capillaries
- 2. The area in the chest that contains the heart
- 3. The two upper chambers of the heart
- 5. Cell fragments that help blood clot
- 6. The largest artery in the body
- 7. The muscular organ that pumps blood throughout the body
- 8. Blood vessels that carry blood back to the heart
- 10. Red fluid that carries oxygen and nutrients in the body
- 13. Tiny blood vessels where oxygen and nutrients are exchanged
- 17. The liquid part of blood that carries cells and nutrients
- 19. Another name for the mitral valve in the heart
Down
- 4. The movement of blood through the body
- 9. Structure that prevents blood from flowing backward
- 11. Cells that help fight infections in the body
- 12. Gas transported by red blood cells to body tissues
- 14. Blood vessels that carry blood away from the heart
- 15. The two lower chambers of the heart
- 16. Type of circulation between the heart and lungs
- 18. Cells that carry oxygen using hemoglobin
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