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Section 31-3 “Immune Response ”

Section 31-3 “Immune Response ”. Write everything that is BLACK. KEY CONCEPT The immune system has many responses to pathogens and foreign cells. extracellular space. capillary wall. white blood cell. Many body systems work to produce nonspecific responses.

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Section 31-3 “Immune Response ”

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  1. Section 31-3“Immune Response” Write everything that is BLACK

  2. KEY CONCEPTThe immune system has many responses to pathogens and foreign cells

  3. extracellular space capillary wall white blood cell Many body systems work to produce nonspecific responses • Nonspecific responses are the same for every pathogen • In inflammation, blood vessels become leaky • white blood cells move toward infection and damaged tissue • causes swelling, redness, and pain

  4. Low fevers stimulate white blood cells to mature • A fever is when body temperature increases • High fevers can cause seizure, brain damage, and even death

  5. antigens virus Cells of the immune system produce specific responses • Specific immune responses begin with the detection of antigens • Antigens are surface proteins on pathogens • Each pathogen has a different antigen

  6. pathogen antigens antigens T cell receptors activated T cells memory T cells • Cellular immunity uses T cells to destroy infected body cells • There are two specific immune responses

  7. B cell pathogen antibodies T cell memory B cells activated B cells • Humoral immunity uses B cells to produce antibodies

  8. B cell T cell • Both responses produce memory cells • specialized T and B cells • provide acquired (active) immunity

  9. The immune system rejects (fights) foreign tissues • Tissue rejection occurs in organ or tissue transplants • Tissue rejection is the result of an immune response • immune system detects protein markers on the donor tissue • makes antibodies against the donor’s tissue

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