BPK 140 Lecture Notes - Lecture 3: Helminths, Protozoa, Microorganism
30 Jan 2016
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Bpk 140 lecture 3 infectious diseases. Caused by an infection => when a microorganism enters a host & causes damage to cells. Time between invasion & when signs & symptoms appear => latent period. Diseases caused by pathogens. Bacteria: most plentiful, but most are good & don"t cause disease. If you give antibiotics to people who don"t need it, you kill good bacteria. This increases bad bacteria. Protozoa: single celled organisms that release enzymes/toxins that destroy/interfere. Not making new antibiotics b/c not profitable. Fungi: absorbs nutrients from host (mushroom, yeast, mold: release enzymes causing damage with antifungal drugs with cell function, treated with antibiotics. Helminthes (parasitic worm): attacks tissue/organs & competes for food, enters through undercooked beef, pork, fish/through skin, treated w/ medication. Animals & insects (vector transmission) Chain of infection: flu virus. How your body protects itself. 1st line of defense skin cilia mucus increase body temp. cough, tears, saliva.
