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 18 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
This medium-difficulty crossword puzzle focuses on key terms of the human circulatory system, designed specifically for ESL learners to build vocabulary and comprehension.
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Across
- 1. Protein in red blood cells that carries oxygen
- 2. Phase of the heartbeat when the heart contracts
- 6. Blood vessel that carries oxygen-rich blood away from the heart
- 8. Smallest blood vessels where exchange of gases occurs
- 9. Small cell fragments that help blood clot
- 11. Blood vessels that return blood to the heart
- 14. The organ that pumps blood throughout the body
- 16. Structure that prevents blood from flowing backward
Down
- 3. Red fluid that carries oxygen and nutrients
- 4. The beating sensation felt in arteries
- 5. The liquid part of blood that carries cells
- 7. The movement of blood through the body
- 10. Small vein that collects blood from capillaries
- 12. Two lower chambers of the heart
- 13. Gas carried by red blood cells to the body
- 15. A section or compartment inside the heart
- 17. The largest artery in the body
- 18. Two upper chambers of the heart
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