Heath 2
- Created by: Leenaa
- Created on: 27-05-15 11:00
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- Health continued
- Diseases
- Infectious caused by pathogens (KNOW HOW THEY TRANSMIT AND HOW SYMPTOMS CAUSE)
- Bacteria: TB
- Virus: HIV
- Protoctist: Malaria
- Know social, environment and economic factors that affect spread of disease
- Influence how diseases may be transmitted
- What makes them difficult to eradicate
- Data analysis
- Describe trends
- Infectious caused by pathogens (KNOW HOW THEY TRANSMIT AND HOW SYMPTOMS CAUSE)
- Immunity
- Primary lines of defence (designed to prevent entry of pathogens in the body)
- Skin
- Acidic to inhibit bacterial growth
- Impermeable
- Mucous membranes
- Found in any 'openings'
- Mucus traps pathogens so can be removed from body
- Eyes
- Lysosomes
- Ear canal
- Wax traps pathogens
- Vaginal conditions acidic
- Low pH in stomach
- Skin
- Second line of defence
- Phagocytes
- Receptor recognises foreign antigens
- Pathogen engulfed
- Forms phagocytic vacuole
- Lysosomes secrete enzymes to break down pathogen
- Into amino acids etc to be absorbed in cytoplasm
- Antigens presented on the surface
- Into amino acids etc to be absorbed in cytoplasm
- Lysosomes secrete enzymes to break down pathogen
- Forms phagocytic vacuole
- Pathogen engulfed
- Activation of T lymphocyte
- T killer (kills infected cells)
- T helper (releases cytokines which activates B cells)
- B cells activated
- Plasma cells
- Produces a lot of antibodies
- Antibody structure
- Produces a lot of antibodies
- Memory cells
- Plasma cells
- B cells activated
- T memory - immunological memory for next time
- DO NOT SAY THE CELLS 'remember'
- Receptor recognises foreign antigens
- Phagocytes
- Primary lines of defence (designed to prevent entry of pathogens in the body)
- Diseases
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