Biology Crossword Puzzle

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Across
  1. 1. the colorless fluid of the lymphatic system, forms when plasma seeps out of blood vessel into intestinal fluid
  2. 3. uses inorganic raw materials like water and carbon dioxide to make its own food.
  3. 5. cancers in which bone marrow overproduces white blood cells
  4. 8. the most common measure, is equal to weight/height^2
  5. 9. also known as a leukocyte which are suspended in blood plasma and occupy the interstitial fluid between cells
  6. 12. are Y-shaped proteins that recognize specific antigens.
  7. 14. any molecule that stimulates an immune reaction by B and T cells
  8. 15. a reaction in which the cells clumped together
  9. 18. is the entrance of food in the digestive tract
  10. 19. when dehydrated these receptor cells in hypothalamus to send impulses in the posterior pituitary gland
  11. 21. is the fluid of the circulatory system
  12. 23. small intestine's lining; tiny fingerlike projections that absorb nutrients
  13. 25. is a condition in which the immune system lacks one or more essential components.
  14. 26. are predators or scavengers that eat the flesh of other animals
  15. 28. substances required for metabolism, growth, maintenance, and repair
Down
  1. 2. are small, colorless cell fragments that participate in blood clotting
  2. 4. an organ is a pump that keeps the blood moving through these vessels
  3. 6. the 3rd stage where the nutrients enter the cells lining the digestive tract and move into the bloodstream to be transported
  4. 7. is the liquid matrix of blood
  5. 10. a member of a large group of unicellular microorganisms which have cell walls but lack organelles and an organized nucleus
  6. 11. is a substance that stimulates active immunity against a pathogen without causing illnesses
  7. 13. the protein that carries oxygen
  8. 14. is an immune reaction to a harmless substance
  9. 16. a mixture of water, mucus, salts, hydrochloric acid, and enzymes
  10. 17. is an immediate, localized reaction to an injury or to any pathogen that breaches the body's barriers
  11. 20. divide and differentiate into memory cells and into effector cells that help activate cytotoxic T and B cells
  12. 22. is the elimination of theses metabolic wastes
  13. 23. a large vein carrying deoxygenated blood into the heart
  14. 24. the chamber in heart where blood exits
  15. 27. are saucer-shaped disks that participate in the exchange of oxygen and carbon dioxide