Relacionar Columnas CVS: Heart - Cardiac CycleVersión en línea Revision por Dr MAHABOOB KHAN SULAIMAN 1 Isovolumetric ventricular relaxation 2 Stroke Volume (SV) 3 Isovolumetric ventricular contraction 4 Late Diastole 5 Atrial Systole 6 Ventricular ejection stands for (EDV - ESV) i.,e (130 - 60 = 70 ml). This is volume of blood ejected from each ventricle per beat. Refers to atrial contraction. Accounts for 20% filling of blood of ventricles. At the end of this you will get "End diastolic volume" (EDV), ~130 ml blood left in each ventricle Ventricle pressure exceeds than pressure in arteries, so semilunar valves open and about 70 ml blood is ejected from each ventricle, out of heart. At the end of this you get "End systolic volume" (ESV), ~60 ml blood left in each ventricle. Its the 1st phase of ventricular contraction. Caused by ventricular depolarization (QRS complex). AV valves are closed but pressure is not enough to open semilunar valves yet. Leads to ventricular systole Both atria and ventricles relaxed, ventricles fill passively Phase after ventricular systole. Ventricles relax due to T wave in ECG (ventricular repolarization) and ventricular pressure falls causing semilunar valve to close (meanwhile atria fill with venous return blood, then ventricle also get filled passively).
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