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 ESL Learners 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 ESL Learners
Build your vocabulary and understanding of the human circulatory system with this medium-level crossword puzzle designed for ESL learners. Perfect for students studying blood flow, heart function, and blood vessels.
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Across
- 1. Process of exchanging oxygen and carbon dioxide
- 2. Smallest blood vessels where exchange occurs
- 3. Red fluid that circulates through the body
- 5. Cell that fights infection
- 6. Heart chamber that pumps blood out
- 8. Movement of blood through the body
- 11. Gas carried by red blood cells to body tissues
- 13. Heart chamber that receives blood
- 15. Cell that carries oxygen in blood
- 17. Build-up inside arteries that can cause blockages
Down
- 4. Rhythmic expansion felt in arteries
- 7. Fat-like substance that can block arteries
- 9. Muscular organ that pumps blood
- 10. Small artery leading to capillaries
- 12. Structure that prevents blood from flowing backward
- 14. Sound made by the heart pumping blood
- 16. Vessel carrying blood toward the heart
- 18. Vessel carrying blood away from the heart
- 19. Liquid part of blood that carries cells
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