Disease And The Immune System

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  • Created by: fjhcab
  • Created on: 20-03-16 20:55
Health
A persons physical, mental & social conditions
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Disease
A disorder or malfunction of the mind or body, which destroys good health
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Pathogen
Any organisms that causes infectious diseases
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Parasite
An organism that lives in or on another organism to get nutrition. They can't live independently
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TB
Bacteria, M.bovis
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Bacterial Meningitis
Bacteria, Strectococcus pneumonia
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Ring Rot
Bacteria
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HIV/AIDS
Virus, Human immunodeficiency virus
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Influenza
Virus, 'Flu' virus
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Tobacco Mosaic Virus
Virus, tobacco mosaic virus
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Black Sigatoka
Fungus
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Blight
Protocsista
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Ringworm
Fungus
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Athletes Foot
Fungus
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Malaria
Protocsista, P.malariae
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Animal Defences
Skin, Mucous Membrane, Blood clotting, Inflammation, Wound repair, Expulsive reflexes
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Passive Defence
There before infection
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Active Defence
Respond only when pathogen is present
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Bark
Contains a variety of chemical defences
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Callose
Deposited in sieve tubes & blocks the flow. Preventing spread around plant
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Tylose Formation
A ballon like swelling in xylem vessel which blocks it to prevent spread
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Terpenoids & Phenols
Essential oils that have antibacterial and anti fungal properties
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Necrosis
Deliberate cell suicide
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Canker
A sunken necrotic lesion in the woody tissue such as the main stem or branch . Causes death of cambium tissue in bark
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Phagocytes
Engulf pathogen. Non specific
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Neutrophils (Phago)
Produced in bone marrow. Active movers. Short lived
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Macrophages (Phago)
Long lived. Often leave BS in lymph nodes. Antigen Presenting Cells (APC) to show pathogen to other WBC
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Lympocytes
Specific. Small WBC. Produce antibodies
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B-Cells (Lympo)
Develop & mature in bone marrow. Stimulated into action by receptor. Multiply by mitosis. Never meet complementary antigen
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Plasma Cell (B-Cells)
Short lived. Create extra protein making machinery. Produce antibodies
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Memory Cells (B-Cells)
Long lived. Don't release antigens. Retain memory of antigen/antibodies. Reproduce if secondary infection occurs
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T-Cells (Lympo)
Develop in thymus gland. Respond to antigens on other membranes
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T-Helper Cells
Have complementary receptors to antigens. Divide by mitosis. Secrete cytokines which stimulate other cells to help fight off pathogen
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T-Killer Cells
Destroys cells they attach to. Only way to kill viruses. Destroyed cells then engulfed
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T-Memory Cells
Retain memory of antigen
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T-Regulatory Cells
Shut down immune system after pathogen has been removed
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Other cards in this set

Card 2

Front

Disease

Back

A disorder or malfunction of the mind or body, which destroys good health

Card 3

Front

Pathogen

Back

Preview of the front of card 3

Card 4

Front

Parasite

Back

Preview of the front of card 4

Card 5

Front

TB

Back

Preview of the front of card 5
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