Basic Blood Vessel Histology! - Class Syllabus · Basic Blood Vessel Histology! Note difference...
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Basic Blood Vessel Histology!
Transcript of Basic Blood Vessel Histology! - Class Syllabus · Basic Blood Vessel Histology! Note difference...
BasicBloodVesselHistology!
Notedifferencebetweenthearteryandthevein,thethicknessofthevesselwallrelativetothelumenandtheshapeofthelumen.TheT.Mediaisthethickestlayerintheartery,whiletheT.Adventitia(akaTunicaexterna)isthethickestinthevein.Alsoyoucansee2valvesinthelumenofthevein(madefromtunicaintima).
Whydosomeveinshavevalves?Doanyarterieshavevalves?
valve
muscularartery- Easytoseeinternalelasticmembrane(IEM).Tunicamedia(TM)withsmoothmuscleTA=Tunicaadventicia (AKATunicaexterna).Externalelasticmembranealsoeasytosee.L=lumen,withlotsofRBC’sseentoo!
muscularartery– justlookatthattunicamedia(TM)!
Artery
VS.
Vein
lumen
lumenCanyouseetheT.Mediainarteryvs.T.Mediaofvein?
Tunicaexternainarteryvs.vein?
WhatisdifferentintheshapeofthelumenofAarteryvs.vein?Whatabouttheanatomy”ofanarterygivesitamoreroundedlumenVs.thefloppyveinlumen?
Howdoesthisdifferenceintheirtunicsdeterminesitsfunction?
Elasticartery–TunicaMediafilledwithelasticfibers(darksquiggles)
Elasticfibers=StretchandRecoiltokeepbloodmovingforward!
lumen
elasticarteryhighmagnification- thedarkstainedelasticfibersareeasilyseen!
