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68WM6 Lymphatic
68WM6 10-10 Lymphatic System
| Question | Answer |
|---|---|
| Lymph | specialized fluid formed in the tissue spaces that returns excess fluid and protein molecules to the blood |
| Lymphatic Capillaries | microscopic, closed-ended tubes that extend into the interstitial spaces and the lining of the small intestine which carry excess fluid and digested fats to the bloodstream |
| Lymphatic Pathways | a network of vessels that transport a vast collection of cells and biochemicals |
| Lymph Nodes | an organ consisting of a capsule of connective tissue divided into compartments that contact dense masses of lymphocytes and macrophages through which lymph circulates and are located along the lymphatic pathways |
| Spleen | a bi-lobed organ, largest of the lymphatic organs, filters bacteria and old blood cells from the circulatory system |
| Thymus | a bi-lobed organ composed of lymphatic tissue, encased in connective tissue, that releases thymosin which stimulates the maturation of T cells important in providing immunity |
| Active Immunity | immunity acquired through the development of antibodies from direct contact with a pathogen |
| Allergens | antigens that trigger allergic responses |
| Antibodies (Immunoglobulins) | soluble, globular proteins that directly attack antigens, activate complement, stimulate changes that prevent the spread of pathogens |
| Antigen | a chemical compound attached to a cell surface which, if not recognized by the lymphatic system, elicits an immune response |
| Autoimmunity | an attack on body tissues and organs that are normally recognized as self |
| B Cell | a lymphocyte that attacks foreign antigens by producing antibodies(also known as immunoglobulins) |
| Chemical Barriers (2nd line of defense) | a barrier that consists of enzymes in body fluids that are lethal to pathogens |
| Fever (2nd line of defense) | a defense mechanism that reduces the level of iron in the blood, reducing growth and reproduction of bacteria and fungi, and increases the action of phagocytes |
| Immunity | an adaptive defense mechanism that targets specific pathogens when present in the body through the use of specialized lymphocytes |
| Inflammation (2nd line of defense) | a tissue response to injury or infection producing localized redness, swelling, heat, and pain as a result |
| Mechanical Barriers (1st line of defense) | a barrier that prevents entry of a pathogen |
| Memory Cell | a B cell or T cell developed to recognize a particular antigen during a primary immune response that remains dormant in the blood stream until reencountering that antigen (secondary immune response) |
| Passive Immunity | immunity acquired through the direct introduction of antibodies for a specific pathogen |
| Pathogen | a disease causing agent which includes viruses, bacteria, fungi, and protozoans |
| Phagocytosis | the process of engulfing and digesting a particle |
| Pus | a thick fluid that results from white blood cells, bacterial cells, and damaged tissue |
| Species Resistance (2nd line of defense) | An organism that is harmful to a unique specie or unique set of species or in which the biochemical environment necessary for survival is not present |
| T Cell | a specialized lymphocyte important in the immune response |
| Vaccine | a pathogen that is introduced into the body in such a form as to create a primary immune response that has no accompanying severe symptoms |
Created by:
egolden12
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