This easy crossword puzzle helps kids in grades 3-5 learn about protein synthesis and DNA basics with common words and simple clues.
Human Circulatory System Crossword Puzzle for Adults 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 Adults
Challenge your knowledge of the human circulatory system with this medium-difficulty crossword puzzle. Ideal for adults and general audiences interested in biology and anatomy.
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Across
- 1. Phase of the heartbeat when the heart muscle relaxes
- 2. Cell responsible for transporting oxygen in blood
- 3. Protein in red blood cells that carries oxygen
- 4. Tiny blood vessels where exchange of gases occurs
- 5. Blood vessel carrying blood away from the heart
- 7. Lower chamber of the heart that pumps blood out
- 8. Term describing circulation between the heart and lungs
- 11. Bluish discoloration due to lack of oxygen in blood
- 14. Blood component important for clotting
- 16. Liquid component of blood that carries cells and nutrients
- 17. Upper chamber of the heart that receives blood
Down
- 6. Largest artery in the body
- 9. Force of blood against artery walls
- 10. Arteries that supply blood to the heart muscle
- 12. Blood vessel that returns blood to the heart
- 13. System that returns excess fluid from tissues to bloodstream
- 15. Structure that prevents backflow of blood in the heart
- 18. Phase of the heartbeat when the heart muscle contracts
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