Biology Crossword ( 3 Science )

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Across
  1. 2. prevent the backward flow of blood.
  2. 4. a circulatory system in which the blood makes two distinct circuits
  3. 6. a group of cells that have similar structure and that function together as a unit.
  4. 9. These narrow tubes carry urine from the kidneys to the bladder.
  5. 11. a blood cell with large percentage of oxygen and low in carbon dioxide.
  6. 13. heart chamber that receives blood into the heart and drives it into a ventricle, or chamber, for pumping blood away from the heart.
  7. 17. pieces of very large cells in the bone marrow called megakaryocytes.
  8. 18. a partition separating two chambers, such as that between the nostrils or the chambers of the heart.
  9. 20. acid
  10. 24. carry deoxygenated blood towards your heart and are often located close to your skin.
  11. 25. provides the functional blood supply to all body tissue.
  12. 26. a toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
Down
  1. 1. It is located in the bottom left portion of the heart below the left atrium, separated by the mitral valve.
  2. 3. the network of capillaries (microvessels) and a large network of tubes located throughout your body that transport lymph away from tissues.
  3. 5. delicate blood vessels that exist throughout your body.
  4. 7. helps to maintain the pressure of blood moving through the system.
  5. 8. It is a muscle that pumps blood to all parts of your body.
  6. 10. the main artery that carries blood away from your heart to the rest of your body.
  7. 12. is a type of white blood cell in the immune system
  8. 14. the clear, straw-colored liquid portion of blood that remains after red blood cells, white blood cells, platelets and other cellular components are removed.
  9. 15. net movement of anything generally from a region of higher concentration to a region of lower concentration.
  10. 16. Fight Bacteria
  11. 19. the largest vein in the body.
  12. 21. a blood protein produced in response to and counteracting a specific antigen. Antibodies combine chemically with substances which the body recognizes as alien, such as bacteria, viruses, and foreign substances in the blood.
  13. 22. he spongy tissue inside some of your bones, such as your hip and thigh bones.
  14. 23. carry blood from the right side of the heart to the lungs.