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Section 31-6 “Immune Diseases ”

Section 31-6 “Immune Diseases ”. Write everything that is BLACK. KEY CONCEPT When the immune system is weakened, the body cannot fight off disease. A person with Leukemia has abnormal white blood cells. Leukemia is cancer of the bone marrow. Person has immature white blood cells

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Section 31-6 “Immune Diseases ”

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  1. Section 31-6“Immune Diseases” Write everything that is BLACK

  2. KEY CONCEPTWhen the immune system is weakened, the body cannot fight off disease

  3. A person with Leukemia has abnormal white blood cells • Leukemia is cancer of the bone marrow • Person has immature white blood cells • causes weakened immune system

  4. occur because white blood cells cannot fight infections • if immune system were healthy, would fight these infections • Leukemia leads to opportunistic infections

  5. HIV targets the immune system • The human immunodeficiency virus (HIV) is a retrovirus • attacks and weakens the immune system • is transmitted by mixing infected blood with a bodily fluid

  6. deadT cell T cell activatedB cell antibody HIV • HIV reproduces in and destroys T cells • The body cannot replace T cells fast enough • T cells cannot help in immune responses

  7. AIDS is acquired immune deficiency syndrome caused by HIV • several opportunistic infections • very low amount of T cells

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