Karteikarten
The infection cycle
Karten in diesem Stapel (13)
- 1Incubation periodtime time between the entry of pathogens and when symptoms start to show
- 2How does the infection cycle begin?By the entry of pathogens
- 3Once inside a cell what do the pathogens do?After they enter the cell, they multiply, cause damage to the cells and release toxins
- 4When will symptoms start to show? Examples of symptomsOnce the immune system starts to work. Examples include fever (deni), vomiting, rash
- 5Define bacteria- whole cell
- can be harmful or beneficial (found in digestive system, yoghurt, beer)
-can be killed by antibiotics - 6Viruses-Not a whole cell
-smallest
-always harmful
-cannot be cured by antibiotics - 7Allergycaused when our immune system overreacts to the wrong substance
If a person is going into anaphylactic shock they will need a pen - 8Methods of spreadair, water, food, contact and animals
- 9Defence in lungscilia, mucus
- 10Defence in stomachacid
- 11What to white blood cells do?1. Produce chemicals called antibodies which attach to microbes and destroy them
2. produce anti-toxins to neutralise toxins made by pathogens
3. Memory cells which remember antibodies used for a particular pathogen - 12Vaccinegiving a weakened form of the virus to the person. The person's immunity system is triggered to fight the weakened virus. The microbe cannot reproduce so it is destroyed quickly. Antibodies are produced. Memory cells remember the antibodies used. The body is now better prepared should the real disease enter.
One of the first vaccines was given by Dr. Jenner who inoculated his own son - 13Herd immunityWhen a large number of people are immunised so there is less change of an epidemic (outbreak) of a disease
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- Beschreibung
- The flash cards help you to revise the topic of diseases, infection cycle and vaccines better.
- Erstellt von
- Karen Bugeja
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