basic blood vessel histology! - class syllabus · basic blood vessel histology! note difference...
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![Page 1: Basic Blood Vessel Histology! - Class Syllabus · Basic Blood Vessel Histology! Note difference between the artery and the vein, the thickness of the vessel wall relative to the lumen](https://reader034.vdocument.in/reader034/viewer/2022050304/5f6d16713cd474103405c7af/html5/thumbnails/1.jpg)
BasicBloodVesselHistology!
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Notedifferencebetweenthearteryandthevein,thethicknessofthevesselwallrelativetothelumenandtheshapeofthelumen.TheT.Mediaisthethickestlayerintheartery,whiletheT.Adventitia(akaTunicaexterna)isthethickestinthevein.Alsoyoucansee2valvesinthelumenofthevein(madefromtunicaintima).
Whydosomeveinshavevalves?Doanyarterieshavevalves?
valve
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muscularartery- Easytoseeinternalelasticmembrane(IEM).Tunicamedia(TM)withsmoothmuscleTA=Tunicaadventicia (AKATunicaexterna).Externalelasticmembranealsoeasytosee.L=lumen,withlotsofRBC’sseentoo!
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muscularartery– justlookatthattunicamedia(TM)!
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Artery
VS.
Vein
lumen
lumenCanyouseetheT.Mediainarteryvs.T.Mediaofvein?
Tunicaexternainarteryvs.vein?
WhatisdifferentintheshapeofthelumenofAarteryvs.vein?Whatabouttheanatomy”ofanarterygivesitamoreroundedlumenVs.thefloppyveinlumen?
Howdoesthisdifferenceintheirtunicsdeterminesitsfunction?
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Elasticartery–TunicaMediafilledwithelasticfibers(darksquiggles)
Elasticfibers=StretchandRecoiltokeepbloodmovingforward!
lumen
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elasticarteryhighmagnification- thedarkstainedelasticfibersareeasilyseen!