History

2. A heart monitor invented by Willem Einthoven in the early 1900’s.
3. Medicines that treat infections by killing bacteria.
4. An unpleasant or unhealthy smell or vapour.
6. scanner: A powerful Xray that provides a cross-section of the human body invented in 1972
9. An organism that can be seen only through a microscope. Examples include bacteria, protozoa, algae, and fungi.
10. The Romans built these to transport fresh water to highly populated areas.
12. A substance used to stimulate the production of antibodies and provide immunity against a disease

1. Heating liquid or food to kill microorganisms.
5. A substance that stops or slows down the growth of microorganisms.
7. To give a weak form of a disease to a person or animal, usually by injection, as a protection against that disease.
8. Protected against, not affected by a disease.
11. four humours: The belief that the substances that make up the human body are: black bile, yellow bile, blood, and phlegm.