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.
Hard Human Circulatory System Crossword Puzzle for ESL Learners is a hard crossword puzzle with 7 clues covering . Play it online for free below, or create your own crossword with our free crossword maker.
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Hard Human Circulatory System Crossword Puzzle for ESL Learners
Challenge advanced ESL learners with this hard-level crossword focused on the human circulatory system. Includes specialized terms related to heart anatomy and blood flow.
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Across
- 1. Study of blood flow and the forces involved within the circulatory system
- 2. Small pores in capillary walls allowing selective passage of substances
- 6. Middle muscular layer of the heart wall responsible for contractions
Down
- 3. Disease characterized by plaque buildup inside arteries causing narrowing
- 4. Small vessels that drain blood from capillaries into veins
- 5. Thin layer of cells lining blood vessels and heart chambers
- 7. Phase of the heartbeat when the heart muscle contracts and pumps blood
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