Biology II: Unit 2 Exam Crossword

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Across
  1. 2. Proteins that recognize and neutralize pathogens
  2. 3. Muscular tube that serves as a passageway for air and food
  3. 5. Small pores that open and close to regulate airflow and prevent water loss in insects
  4. 7. Semi-liquid mixture generated by the stomach
  5. 12. Scientific term for Heavy Breathing
  6. 14. Process by which organisms regulate the balance of water and solutes in their body
  7. 17. Structures that ensure one-way blood flow through the heart
  8. 19. Substance that triggers a specific immune response
  9. 20. Relaxation phase of the heart where chambers fill with blood
  10. 21. Muscular passageway for food and air
  11. 22. Interstitial fluid collected in lymphatic capillaries
Down
  1. 1. Records the volumes of air inhaled and exhaled
  2. 2. Tiny air sacs surrounded by capillaries that increase the surface area available for gas exchange
  3. 4. Functional and structural unit of the kidney
  4. 6. Molecule that acts as a communication signal to coordinate immune activity and recruit cells
  5. 8. Group of similar cells and their extracellular matrix working together to perform a specific function
  6. 9. Projections composed of enterocytes in the small intestine
  7. 10. Location of T Cell maturation
  8. 11. Middle layer of skin that provides strength, elasticity, and structural support
  9. 13. Influences connective tissue properties
  10. 15. Structure that divides the heart into right and left sides, preventing the mixing of oxygenated and deoxygenated blood
  11. 16. Structure that carries blood away from the heart
  12. 18. Circulating fluid of an open circulatory system