Heart, Blood & Lungs

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Across
  1. 2. Main artery carrying oxygenated blood from heart to body.
  2. 8. Prevents backflow between left atrium and ventricle during contraction.
  3. 9. Convey oxygenated blood from heart to body's tissues.
  4. 10. Microvessels enable exchange of gases, nutrients, and waste between blood and tissues.
  5. 12. Tiny air sacs facilitating gas exchange in lungs.
  6. 14. Windpipe directing inhaled air to bronchi and lungs.
  7. 15. Carry oxygen, removing carbon dioxide from body's systems.
  8. 17. Transport deoxygenated blood from body back to heart.
  9. 19. Carries deoxygenated blood from heart to lungs for oxygenation.
  10. 21. Brings oxygenated blood from lungs to heart's atrium.
  11. 22. Large vein returning deoxygenated blood to heart's atrium.
  12. 23. Process of saturating blood with oxygen in lungs.
  13. 24. Defend against infections, support immune responses in body.
Down
  1. 1. Assist in blood clotting, vital for wound healing and prevention.
  2. 3. Aids blood flow from right atrium to ventricle, preventing backflow.
  3. 4. Air tubes branching from trachea into lungs.
  4. 5. Guard major arteries, stopping blood return to ventricles.
  5. 6. Liquid component of blood transporting nutrients, hormones, and waste.
  6. 7. Number of heartbeats per minute, indicates cardiovascular health.
  7. 11. Different antigen markers classify blood types (A, B, AB, O).
  8. 13. Smallest air tubes in lungs, connecting bronchi to alveoli.
  9. 16. Removal of oxygen from blood in body tissues.
  10. 18. Throbbing arteries due to heart contractions; indicates heart rate.
  11. 20. Muscular organ pumping blood, driving circulation to body's organs.