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 Upper Elementary is a hard crossword puzzle with 13 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 Upper Elementary
Challenge advanced young learners with this hard-level human circulatory system crossword. Features technical terms and detailed concepts suited for grades 3-5.
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Across
- 1. The process of adding oxygen to the blood in the lungs.
- 2. The scientific name for red blood cells that carry oxygen.
- 3. Blood vessels that carry oxygen-rich blood away from the heart.
- 4. One of the lower chambers of the heart that pumps blood out.
- 5. The thick muscular layer of the heart wall responsible for contraction.
- 9. The liquid component of blood that transports cells and nutrients.
- 12. The two upper chambers of the heart that receive blood.
Down
- 6. Tiny blood vessels where oxygen and nutrients exchange with tissues.
- 7. Relating to the lungs; the artery carries deoxygenated blood here.
- 8. Structures in veins and heart that prevent blood from flowing backward.
- 10. Protein in red blood cells that binds and transports oxygen.
- 11. The largest artery in the body that distributes blood from the heart.
- 13. CAVA Large vein that brings deoxygenated blood back to the heart.
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