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Chapter 7
Lymphatic and Immune System
| Question | Answer |
|---|---|
| Functions; | removes extra fluid from tissues; aids immune function; phagocytes in lymph nodes filter lymph; phagocytes in the spleen filter blood; thymus is larger and most active in children |
| Pathogen; | foreign microorganism that causes disease |
| Barrier defense; | skin, mucous membrane, mucus, stomach acid |
| Inflammatory reaction; signs; | redness, swelling, heat, pain |
| Inflammatory reaction; functions; | increases blood flow, brings immune cells, nutrients, oxygen to help heal and fight infection; fluid seeps out of blood into tissues, brings WBCs, nutrients with it; heat increases metabolism, helps heal; pain from swelling signals that something is wrong |
| B lymphocytes (B Cells); | produce antibodies; antibody-mediated response |
| T lymphocytes (T Cells); | cell-mediated response; helper T-cells start the immune reaction |
| Antibodies; | proteins that bind antigens |
| Antigen; | triggers an immune response |
| Plasma cells; | make antibodies; memory cells fights future infections |
| Vaccination; | inject weakened virus to trigger antibody production and invoke memory |
| Autoimmune disorders; | immune system attacks its own tissue |
| Rejection of organ transplants; | antigens on donor organ are recognized as foreign by recipient, so they attack and destroy organ |
| Allergies; | immune system overreacts to a non-harmful substance = pollen, dander, food |
Created by:
castigisselle
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