Lec 2| Cardiac Cycle / Heart Beat Chap 2 Blood Circulatory Sys of Man 12th Biology By Zohaib Hassan

iN THIS VIDEO 00:00 - 00:36 Intro 00:37 - 02:34 Definition 02:35 - 03:45 Atrial Diastole 03:46 - 04:51 Atrial Sytole 04:52 - 06:38 Ventricular Systole 06:39 - 07:44 Ventricular DIastole 07:45 - 09:18 Duration 09:19 - 11:01 ISOVOLUMETRIC cONTRACTION RELAXATION Definition of heartbeat and cardiac cycle Duration of one cardiac cycle (0.8 seconds at 75 beats/minute) Atrial systole and ventricular filling Ventricular systole and blood ejection Complete cardiac diastole Isovolumetric contraction explained Isovolumetric relaxation explained Opening and closing of AV valves Opening and closing of semilunar valves Changes in ventricular pressure and blood volume Heart sounds: Lub-Dub #CardiacCycle #Heartbeat #HumanHeart #biologyclass12 #FBISE #MDCAT #IsovolumetricContraction #IsovolumetricRelaxation #VentricularSystole #AtrialSystole #HeartValves #HumanPhysiology #FScBiology #ZohaibHassanBiology Complete sequence of the cardiac cycle