Fighting Disease
- Created by: isabella newsum
- Created on: 15-11-14 16:09
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- Disease
- Types
- Bacteria- very small, they damage your cells and produce toxins
- Virus- not cells, replicate in your cells, cell bursts and this damage makes you feel ill
- Defense System
- Skin, plus hair and mucus in respiratory tract
- Platelets help blood clot from a wound
- If all fails- Immune System- White Blood Cells
- Engulf and Digest
- Antibodies attack the microbe- immunity if infected again
- Antitoxins- Bacteria
- Vaccination
- Dead/inactive microorganisms- carry antigens
- Weakened versions
- Measles, Mumps, Rubella
- Pros
- Conrol infectious Disease- Smallpox
- Epidemics can be prevented if a large % are vaccinated
- Cons
- Sometimes don't give you immunity
- Bad reaction
- Drugs
- Painkillers relieve symptoms
- Antibiotics kill/prevent growth of the bacteria
- Don't kill viruses, as they use body's cells
- Bacteria can mutate- resistant to an antibiotic
- Survive and reproduce
- Investigate in 'culture medium'- agar jelly
- Past and Future
- Semmelweis- antiseptic solution
- Bacteria- mutate, produce new strains- antibiotic resistant or one that no one is immune to- epidemic
- Virus- mutate often, hard to develop a vaccine, if a deadly disease evolved- pandemic
- Types
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