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11 Cards in this Set

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Lymphatic
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
3 major functions
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
Lymphatic side notes review
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
Components of the lymphatic system
stroma
cortex
spleen
thymus
tonsils
cortex
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
stroma
parenchyma
spleen
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)
Thymus
anterior to tracea above heart has 2 lobes and has capsule on outside trabaculae goes inside cortex and medulla
Thymus cortex functions
outer area of the lymphocytes migrate here after first synthesized and they mature in theymus once they mature they leave
Thymus medulla function
four hormones are produced- thymic hormones help in maturation of WBC- sopposedly help in again process over years this Thymus will atraphee
Tonsils
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