Chapter 16 definitions
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each of the black spaces below before clicking
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| Lymphatic nodules | Masses of lymphatic tissue
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| Pharyngeal tonsil | Adenoids; sits on the wall of the pharynx, just behind the nasal cavity
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| Palantine tonsils | Lie in the posterior of the oral cavity
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| Lingual tonsils | Concentrated in patches on each side of the base of the tongue
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| Spleen | The body's largest lymphatic organ; surrounded by a fibrous capsule; contains red pulp and white pulp
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| Lysozyme | An enzyme found in mucus, tears, and saliva which destroys bacteria
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| Chemotaxis | The movement of WBCs to an area of inflammation in response to the release of chemicals from the injured cells
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| Interferon | Protein released from virus-infected cells that helps protect nearby cells from invasion
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| Anaphylaxis | Severe, immediate hypersensitivity reaction affecting the entire body
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| Cellular immunity | Immune response that targets foreign cells or host cells that have become infected with a pathogen
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| Complement | A group of proteins in blood that, through a cascade of chemical reactions, participate in nonspecific immunity
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| Humoral immunity | Immune response that uses antibodies to target pathogens outside the host cells
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| Immunoglobulins | Antibodies
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| Macrophage | Important phagocyte that remains fixed in strategic areas
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| Natural killer (NK) cells | Unique group of lymphocytes that continually roam the body seeking out pathogens or diseased cells
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| Neutrophils | Phagocytes that accumulate rapidly at sites of acute injury
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| Phagocytosis | Process by which phagocytes engulf and destroy microorganisms
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| Pyrexia | Fever
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| Thymus gland | Lymphoid organ where T cells mature; located in the mediastinal cavity
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