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Infectious Disease

Infectious Disease. Recall Prior Knowledge –. How do the body’s defenses prevent pathogens from entering the body? Through internal & external defenses Internal – white blood cells, T/B cells External – tears, skin, mucous membranes, hair, nails. Recall Prior Knowledge.

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Infectious Disease

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  1. Infectious Disease

  2. Recall Prior Knowledge – • How do the body’s defenses prevent pathogens from entering the body? • Through internal & external defenses • Internal – white blood cells, T/B cells • External – tears, skin, mucous membranes, hair, nails

  3. Recall Prior Knowledge • How does the immune system attack pathogens? • Inflammation – fever • T cells attack and B cells remember so it doesn’t get sick again

  4. Disease Overview – compare non-infectious and infectious disease • Noninfectious diseases that CANNOT be passed on from person to person • Caused by genetic or environmental factors or mutagens • Infectious diseases passes from person to person • Caused by pathogens, including bacteria, fungi, parasites, and viruses

  5. Causes of Infectious Diseases • Parasites can cause disease • lice • Infectious fungi can cause skin infections • Ring worm, athletes foot • Viral diseases are spread easily • Colds, flus, HIV/AIDS • Infectious bacteria spreads easily • Different types of bacteria causes strep, bronchitis, tonsillitis, tuberculosis, sinus infections, food poisoning • Each pathogen causes a specific disease

  6. Homework • Read pgs 114 – 117 and answer questions (handout) • Draw a table with 3 columns – • Column 1 – diseases I’ve had • Column 2 – diseases family members have had • Column 3 – diseases I’ve never had but have heard of

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