BIOLOGY

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Across
  1. 1. A colorless liquid of the lymphatic system.
  2. 7. A substance that triggers an allergy or an allergic reaction
  3. 8. Substances that are required for metabolism, growth, maintenance and repair
  4. 11. A cartilage flap that covers the glottis so that the food enters the esophagus, not the lungs.
  5. 12. Rhythmic waves of contractions that propel food in one direction
  6. 14. This is where the signal to contract begins and also known as the sinoatrial node
  7. 15. A substance that stimulates active immunity against a pathogen without actually causing illness
  8. 17. A condition in which the immune system lacks one or more essential components
  9. 20. The process wherein organisms control the concentration of ions in their body fluids as their environment changes
  10. 21. A box-like structure that produces the voice. Also referred to as the adam’s apple.
  11. 22. Refers to the widening of blood vessels that occurs when smooth muscles in the arteriole relaxes
  12. 24. They are the finest branches in the lungs
  13. 25. An infection of the bacterium, Mycobacterium tuberculosis
  14. 26. Functional units of the Kidney
  15. 29. The tube that connects the bladder to the outside of the body
  16. 30. Liquid waste formed as the kidney cleanse the blood
Down
  1. 2. Scavenger cells that engulf and destroy bacteria and debris
  2. 3. A chemical that dilates blood vessels and causes them to become leakier
  3. 4. Process wherein food enters into the mouth
  4. 5. Mineral-hardened structures embedded in the jaws.
  5. 6. Major excretory organs in the urinary system.
  6. 9. A hormone that stimulates production of sodium channels in the nephron
  7. 10. A type of respiration that uses oxygen to generate ATP that is required for life
  8. 13. A reaction in which cells clump together due to the production of antibodies against incompatible blood types.
  9. 16. A condition in which there are fatty deposits inside the walls of arteries which reduce blood flow
  10. 18. A type of circulation wherein blood from the right side of the heart exchanges gasses at the lungs and returns to the lungs
  11. 19. Semifluid mixture of food and gastric juice in the stomach
  12. 23. Inflammation of the alveoli wherein mucus and white blood cell accumulate.
  13. 27. Also known as the throat
  14. 28. An enzyme that digests proteins