LeftVentricle(heart)FromWikipedia,thefreeencyclopediaJumptonavigationJumptosearchChamberoftheheartVentricleComputergeneratedanimationofcutsectionofthehumanheartshowingbothventricles.DetailsIdentifiersLatinventriculuscordisMeSHD006352TA98A12.1.00.012FMA7100Anatomicalterminology[editonWikidata]Aventricleisoneoftwolargechamberstowardthebottomoftheheartthatcollectandexpelbloodreceivedfromanatriumtowardstheperipheralbedswithinthebodyandlungs.Theatrium(anadjacent/upperheartchamberthatissmallerthanaventricle)primesthepump.Inafour-chamberedheart,suchasthatinhumans,therearetwoventriclesthatoperateinadoublecirculatorysystem:therightventriclepumpsbloodintothepulmonarycirculationtothelungs,andtheleftventriclepumpsbloodintothesystemiccirculationthroughtheaorta.Theterm"interventricular"meansbetweentheventricles(forexampletheinterventricularseptum),while"intraventricular"meanswithinoneventricle(forexampleanintraventricularblock).Contents1Structure1.1Shape1.2Development2Function2.1Pumpingvolume2.2Volumes2.3Pressures2.3.1Left2.3.2Right2.4Dimensions3Clinicalsignificance4Seealso5References6ExternallinksStructure[edit]HeartsectionshowingventriclesandventricularseptumVentricleshavethickerwallsthanatriaandgeneratehigherbloodpressures.Thephysiologicalloadontheventriclesrequiringpumpingofbloodthroughoutthebodyandlungsismuchgreaterthanthepressuregeneratedbytheatriatofilltheventricles.Further,theleftventriclehasthickerwallsthantherightbecauseitneedstopumpbloodtomostofthebodywhiletherightventriclefillsonlythelungs.[citationneeded][1]Ontheinnerwallsoftheventriclesareirregularmuscularcolumnscalledtrabeculaecarneaewhichcoveralloftheinnerventricularsurfacesexceptthatoftheconusarteriosus,intherightventricle.Therearethreetypesofthesemuscles.Thethirdtype,thepapillarymuscles,giveoriginattheirapicestothechordaetendinaewhichattachtothecuspsofthetricuspidvalveandtothemitralvalve.Themassoftheleftventricle,asestimatedbymagneticresonanceimaging,averages143g±38.4g,witharangeof87––224g.[2]Therightventricleis