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Across
  1. 1. scanner A powerful Xray that provides a cross-section of the human body invented in 1972
  2. 6. medicines that treat infections by killing bacteria
  3. 7. The Romans built these to transport fresh water to highly populated areas.
  4. 8. of the Four Humours The belief that the substances that make up the human body are: black bile, yellow bile, blood, and phlegm
  5. 9. an organism that can be seen only through a microscope. Examples include bacteria, protozoa, algae, and fungi.
  6. 10. to give a weak form of a disease to a person or animal, usually by injection, as a protection against that disease
  7. 11. An unpleasant or unhealthy smell or vapour.
Down
  1. 2. A substance that stops or slows down the growth of microorganisms
  2. 3. protected against, not affected by a disease
  3. 4. a heart monitor invented by Willem Einthoven in the early 1900’s
  4. 5. heating liquid or food to kill microorganisms