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Lymph
- Flows through lymphatic vessels
- fluid lost from blood capularies
- 3 liters per day
- water, ions, protiens, and white blood cells
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Capillaries
- endothelium and connective tissue
- permeable (everywhere besides blood brain barrier)
- most cells near capullaries
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lymphatic Flow
- lymphatic capularies
- lymphatic vessels &nodes
- lymphatic trunks & ducts
- dump into subclavian veins
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Edema
swelling due to fluid building up
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Elephantiasis
- warms that entering through your feet
- reproduce
- fill up your lymphatic system
- keeping the fluid from getting back yo your heart
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Lymph Nodes
- ball shaped structures
- occur in groups
- filter or trap-immune function (pathogens)
- lymphocytes & macrophages (monocytes)
- can be infected (painful)
- spread cancer
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lymphatic Organs
- 1. spleen
- 2. tonsils
- 3. thymus
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Spleen
- left side of abdomin
- filter blood for disease
- removes and phagocytize olf RBC's
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Thymus
- right above heart, in mediaastium
- childrean its tissue but turns to fat as it gets older
- development of t-lymphocytes
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Tonsils
immunity "memory"
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Inate
- serious of mechanisms that respond the same way to a whole bunch of different diseases.
- will not remember
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Adaptive
responds to a specific pathogen and will remember it
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Chemical Mediators
- mucus
- can kill pathogens.....good thing
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Sebum
- oil in hair
- kills pathogens
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Lysosomes
- membrane bound molecule that kills pathogens
- filled with lysoxymes
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Complement
- compleated froup of chemicals that needs to be triggered
- create hole in plasma membrane of bacteria
- allos sodium and water in so bacteria will explode
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Interferons
- produced by cells infected by a virus
- triggers surrounding cells to produce an antivirul protein
- prevents the virus from building RNA, DNA, and protien
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White Blood Cells
- phagocytize, engold bacteria
- neutrophils and macrophages
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Natural killer cells
lymphocytes that kill infected cells
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basophils and most cells
produce histamines (cause swelling)
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eosinophiles
reduce inflammation
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Inflammation
- injury/infection (swollen red)
- increase blood flow
- chemical attraction of phogocytic WBC
- releases complement
- fibrin, trap infection
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Specificity and memory
attacking specific pathogens and we are remembering them
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Antigens
- mollicule (forigne) on the surface of cells
- how body remembers pathogens
- self vs non-self
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