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 High 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 High School
Explore key vocabulary of the human circulatory system with this medium-difficulty crossword puzzle. Perfect for 9th-12th graders studying heart anatomy, blood flow, and related concepts.
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Across
- 1. Circulation loop between the heart and lungs
- 3. Blood components that help with clotting
- 4. Protein in red blood cells that carries oxygen
- 6. Heart valve located between right atrium and ventricle
- 8. Muscular organ that pumps blood through the body
- 12. Vessels that carry blood away from the heart
- 15. Structures that prevent backflow of blood
- 17. Phase of the heartbeat when the heart muscle contracts
- 19. Largest artery in the body
Down
- 2. Heart valve located between left atrium and ventricle
- 5. Scientific name for red blood cell
- 7. Tiny blood vessel where gas exchange occurs
- 9. Phase of the heartbeat when the heart relaxes
- 10. Lower chambers of the heart that pump blood out
- 11. Upper chambers of the heart
- 13. Muscle that aids breathing, helping circulation indirectly
- 14. Blood vessels that return blood to the heart
- 16. Circulation loop between the heart and the rest of the body
- 18. Liquid part of blood that carries cells and nutrients
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