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11 Cards in this Set
- Front
- Back
Lymphatic
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1. Resistance- fight disease-defense
2. Immunity- specific- lymphocytes are activated to act against a pathogen- most are a form of protein that doesnt belong 3. Lymphatic system- consists of a fluid called lymph intercellular and extracellular fluid **RBmarrow is lymphatic bc this is where blood cells are manufactured |
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3 major functions
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1.drains-excess interstitual fluid from system
2. absorbs- digestive lipid material eaten, carb, protiens and fats, lacteal vessel absorbs 3. protects against invasion of organisms that dont belong T-cell- killer cell B-cell- differentiates and becomes a plasma cell that manufactures antibodies |
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Lymphatic side notes review
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a closed end system ( it doesnt circulate) begins at lymph Capillaries (between cells, btwn cardiovascular network) fluid eventually works its way up to superior part of body and eventually gets back into blood stream
*one way valve so material can enter but cant leave |
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Components of the lymphatic system
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stroma
cortex spleen thymus tonsils |
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cortex
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has all of lymphocytes, inner area of cortex, T-cells ...- lymph comes afferent in through vessel through organ--toward center by Hylus, Blood vessel/nerves lead and go through efferently
lymphnodes---removing them prevents spread |
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stroma
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parenchyma
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spleen
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5in. lenght largest organ surrounded by dense C.T. capsul covered by paratineum has 2 sub
...Racamu- White. pulp (collection of lymphocytes cleansing blood) - Red. Pulp (vascular tissure..blood vessels) ***function- destruction of harmful materials, recycle break down of materials like RBC, amino cids, storehouse for blood (can be removed without real harm to body) |
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Thymus
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anterior to tracea above heart has 2 lobes and has capsule on outside trabaculae goes inside cortex and medulla
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Thymus cortex functions
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outer area of the lymphocytes migrate here after first synthesized and they mature in theymus once they mature they leave
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Thymus medulla function
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four hormones are produced- thymic hormones help in maturation of WBC- sopposedly help in again process over years this Thymus will atraphee
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Tonsils
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lymphatic nodules in a ring around back of nasal oral cavity in pharynx...
3 groups *lingual tonsils- below tongue *paletine tonsils- near pharynx in post part of oral coavity near palentine bone *pharyngeal tonsil- adenoids ...get bigger when infected and creates nasal sound in voice |