Heart ValvesAortaPulmonaryLeftAVtrunk(bicuspid) valveAorticvalveRightAVAnteriorleaflet(tricuspid) valveof mitral valveFibrousskeletonAnterolateralpapillaryOpeningstomusclecoronaryarteriesAorticvalvePulmonaryvalveTheMinuValivcargPosterior leafletLeftChordaeofmitralvalveventricletendineae(a)Posteromedialpapillarymuscle
Heart Valves
Operation of Atrioventricular ValvesCopyright e The McGraiw-Hill Companies, Ire, Pemnission requiredtorteproduction.ordisplaAtriumAtrioventricularvalveVentricle(a)AtrioventricularvalvesopenAtrioventricularvalvesclosed
Operation of Atrioventricular Valves
Operation of Semilunar ValvesCopytightOTheMeGraiw-Hif Corlre.PefrodtorneproductionardisplnAortaPulmonaryarteryASemilunarvalve(b)SemilunarvalvesopenSemilunarvalvesclosed
Operation of Semilunar Valves
Blood Flow Through HeartCopynghtTheMcGraw-HilCompanies, inc.Permission required forreproduction ordispiayDBioodentersrightatriumfromsuperiorand inferiorvenae cavaeBlood in rightatrium flowsthrough rightAortaAVvalveintorightventricle.Leftpulimonaryartery③Contractionofrightventricleforcespulmonaryvalve open.BloodflowsthroughpulmonaryvalvePulmonary trunkintopulmonarytrunk.SuperiorvenacavaLeftpulmonaryBloodis distributedbyrightandleftveinspulmonary arteries to the lungs,where itRightunloads CO2and loadsO2pulmonaryLeftatriumveinsBiood retumsfromlungsvia pulmonaryAorticvalvearteriestoleftatrium.LeftAVBlood inleftatriumflowsthroughleftAV(bicuspid) valveRightvalveintoleftventricleatriumContractionof leftventricle(simultaneouswithRightAVstep3)forcesaorticvalveopen(tricuspid)valveLeftventricleBloodflowsthroughaorticvalveintoRightascendingaorta,ventricleInferiorTBloodinaortaisdistributedtoeveryorganin11thebody,where itunloadsO2andloadsCO2venacavaDBloodreturnstoheartviavenaecavae
Blood Flow Through Heart
Pressure and Volume change in a cardiac cycleCORRELATIONOF EVENTSINLEFT SIDEOFHEARTELECTROCARDIOGRAMPRESSUREmmHg120LeftAtrial80Pressure40-0UENTRICULARVOLUMEMI12050DSDSDDVentricular diastole S-Ventricular systole
Pressure and Volume change in a cardiac cycle