Disease And The Immune System 0.0 / 5 ? BiologyHealth, illness and diseaseASOCR Created by: fjhcabCreated on: 20-03-16 20:55 Health A persons physical, mental & social conditions 1 of 36 Disease A disorder or malfunction of the mind or body, which destroys good health 2 of 36 Pathogen Any organisms that causes infectious diseases 3 of 36 Parasite An organism that lives in or on another organism to get nutrition. They can't live independently 4 of 36 TB Bacteria, M.bovis 5 of 36 Bacterial Meningitis Bacteria, Strectococcus pneumonia 6 of 36 Ring Rot Bacteria 7 of 36 HIV/AIDS Virus, Human immunodeficiency virus 8 of 36 Influenza Virus, 'Flu' virus 9 of 36 Tobacco Mosaic Virus Virus, tobacco mosaic virus 10 of 36 Black Sigatoka Fungus 11 of 36 Blight Protocsista 12 of 36 Ringworm Fungus 13 of 36 Athletes Foot Fungus 14 of 36 Malaria Protocsista, P.malariae 15 of 36 Animal Defences Skin, Mucous Membrane, Blood clotting, Inflammation, Wound repair, Expulsive reflexes 16 of 36 Passive Defence There before infection 17 of 36 Active Defence Respond only when pathogen is present 18 of 36 Bark Contains a variety of chemical defences 19 of 36 Callose Deposited in sieve tubes & blocks the flow. Preventing spread around plant 20 of 36 Tylose Formation A ballon like swelling in xylem vessel which blocks it to prevent spread 21 of 36 Terpenoids & Phenols Essential oils that have antibacterial and anti fungal properties 22 of 36 Necrosis Deliberate cell suicide 23 of 36 Canker A sunken necrotic lesion in the woody tissue such as the main stem or branch . Causes death of cambium tissue in bark 24 of 36 Phagocytes Engulf pathogen. Non specific 25 of 36 Neutrophils (Phago) Produced in bone marrow. Active movers. Short lived 26 of 36 Macrophages (Phago) Long lived. Often leave BS in lymph nodes. Antigen Presenting Cells (APC) to show pathogen to other WBC 27 of 36 Lympocytes Specific. Small WBC. Produce antibodies 28 of 36 B-Cells (Lympo) Develop & mature in bone marrow. Stimulated into action by receptor. Multiply by mitosis. Never meet complementary antigen 29 of 36 Plasma Cell (B-Cells) Short lived. Create extra protein making machinery. Produce antibodies 30 of 36 Memory Cells (B-Cells) Long lived. Don't release antigens. Retain memory of antigen/antibodies. Reproduce if secondary infection occurs 31 of 36 T-Cells (Lympo) Develop in thymus gland. Respond to antigens on other membranes 32 of 36 T-Helper Cells Have complementary receptors to antigens. Divide by mitosis. Secrete cytokines which stimulate other cells to help fight off pathogen 33 of 36 T-Killer Cells Destroys cells they attach to. Only way to kill viruses. Destroyed cells then engulfed 34 of 36 T-Memory Cells Retain memory of antigen 35 of 36 T-Regulatory Cells Shut down immune system after pathogen has been removed 36 of 36
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