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Description
Flashcards by Lilian Vieyra, updated more than 1 year ago
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Created by Lilian Vieyra
over 10 years ago
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| Question | Answer |
| Function | Protect vs diseases & damaging foreign bodies It recognizes & memorizes particular pathogens |
| Immune System = | Specific Immunity + Nonspecific Immunity |
| Nonspecific Immunity | Barriers Skin Chemical |
| Barriers | Are used to protect vs pathogens |
| Skin | 1st major line of defense |
| Chemical | -Nesal secretions, saliva & tears Lysozyme: breaks down bacteria cell walls -Mucus -Hydrochloric acid |
| Nonspecific responses to invasion | If a pathogen gets beyond the barriers... |
| Cellular Defense | Neutrophils-> phagocytosis: blood cells that ingest bacteria Macrophage -> ": blood cells that eat bacteria & remove dead neutrophils Lymphocytes -> Specific immunity: blood cells that produce antibodies |
| Interferon | Protein that binds to neighboring cells & stimuli them to PRODUCE ANTIVIRAL PROTEINS to prevent viral replication |
| Inflamatory response | 1. Pathogens damage the tissue 2. Chemicals are released by the invader & body cells 3. Chemicals attract phagocytes, + blood flow to the infected area & make blood vessels more permeable to allow white cells to scape |
| Specific Immunity | Involves tissues & organs of the lymphatic system |
| Lymphocytes | Type of white cells (produced in red bone marrow) |
| Lymph nodes | Filter lymph & remove foreign materials |
| Tonsils | Form a protective ring of lymphatic tissue between nasal & oral cavities |
| Spleen | Stores blood & destroys damage red blood cells |
| Thymus Gland | Activates a special lymphocytes (T cells) |
| B cells response | Antibodies Antigen B lymphocytes (cells) |
| Antibodies | Proteins produced by B lymphocytes that react with an antigen (invasor) |
| Antigen | Foreign substance that causes an immune response |
| B lymphocytes (cells) | Antibody factories (located in lymphatic tissue) |
| B-Cells attack invaders OUTSIDE the cells | T-Cells Attack invaders INSIDE the cells |
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