body systems

4. a bacterial causes by Clostridium tetani
6. the chemical store of glucose in the liver
7. a hormone that has the opposite effect to insulin; it releases glucose from the stores liver and muscles
9. special cells that detect stimuli
11. a pathogen about 100 times smaller than bacterium
15. the electrical message carried by a nerve cell
19. a nerve cell
20. muscles or glands that puts the muscles into effect
21. anything that causes out body to stop working properly
24. an early antibiotic
25. a substance that kills bacteria or prevents the growth of bacteria
27. the common name for the hormone epinephrine
28. a nerve fibre that sends nerve impulses away from the cell body

1. an organism that causes disease
2. a cell that viruses have invaded
3. a chemical that kills fungi
5. a single cell with a tough skin that fungi use to spread
8. hormone produced in the pancreas that causes the liver and muscles to extract glucose from the bloodstream and store it in the liver and muscles
10. able to maintain a constant body temperature
11. a chemical that causes your body to react as if had encountered pathogen
12. the process of maintaining a constant internal environment
13. the system in your body that fights infections
14. very easy to spread; used to describe a disease
16. the lower half of the brain cell
17. part of the brain where the spinal cord enters the skull; it controls the body's vital functions, such as breathing, blood pressure and heart rate
18. isolation to prevent the spread of disease
22. any factor that stimulates a receptor and brings out a response
23. chemical substances that act as messengers in the body
26. an infectious disease caused by Plasmodium