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68W-M6
Lymphatic System
| Question | Answer |
|---|---|
| Spleen | Largest lymphatic organ; filters bacteria from blood |
| Red pulp | Surrounds venous vessels, old and fragile RBCs may rupture |
| White pulp | contains many lymphocytes |
| Thymus | bi-lobed organ in mediastinum, encased in connective tissue |
| thymosin | released by the thymus; stimulates maturation of T-cells |
| interstitial fluid becomes lymph by way of: | hydrostatic pressure |
| lymph | tissue fluid that has entered a lymphatic capillary, contains small proteins |
| active immunity | immunity acquired through the development of antobodies from direct contact with a pathogen |
| allergens | antigens that trigger an allergic response |
| antibodies (immunoglobulins) | soluble, globular proteins that directly attack antigens, activate complement, stimulate change to prevent spread of pathogens |
| antigen | a chemical compound attached to a cell surface which if not recognized by the lymphatic system, will trigger immune response |
| autoimmunity | an attack on body tissue and organs that are normally recognized as "self" |
| B-Cell | lymphocyte that attacks foreign antigens by producing antibodies |
| Chemical Barriers | a barrier that consists of enzymes in body fluids that are lethal to pathogens |
| fever | a defense that reduces iron in the blood, reducinggrowth and production of bacteria and fungi, increases actions of phagocytes |
| immunity | adaptive mechanism that targets specific pathogens when present in the body through the use of specialized lymphoctyes |
Created by:
jedimedic