 इस मुद्युल में काडिक साइकल दिसकस करतें काडिक साइकल ये आल्त्रनेद कीं शाइकल है किस की खाडच Better. ये इत्रिया के बर वेंट्रिकल भींट्रिकल की बर लेई औग. तु ये तु आप ने शाँ तु बोग गайн फाँए.生 times the b the the this we did it कुकimaan ये चवात है, तो हम कुँईसी स्टेजсе भी संग सोगते है.. मेरे ज़्ध है है, हो तो आप रहा आप खुएन के आप तर्फींगा है.. कि जिस मे क्या है... यantlya which is very much healthy for the body and the blood. तो थी कह भी रहाए, यह सी थे बहुँगतेग. और ये ट्रीकुष्पट और क्कई भीान् कोई आपन लोग रहेगेग, ये प्रैस्यर के बचले करुद. और प्र इं इं आपसो हveer in atrial blood, that comes ये वेंट्रिकुई बेंदादों आपसे आत्काद बचले च्रिदॄाए दे लाचाःृ रहहेगे. इसे यह ज़़ंटिखिल of this is the contraction of the ventricles. और यह ज़ो श्यासी यह बिदुत करूष्य आने का the process of coming from Aetheria to Ventricle that takes about 0.1 seconds. और फीर उसकम अद्वित ख्लिए। And after that, the scheming of the ventricles is complete. बैं देविल चफ्याज़ ज़े लीडिकरओषि एस द्याक्तार भई देगते। as we are looking at in this diagram. ठोयते का लन्स गुर दाद अद हैं। यह बीजगी अबदी मेंे जाही देउछा एक वोटा। नींगस उन यह गर चाप ही फ्लुप गुर देखा है। तो मीने गड़शु बूने ती आप आजली प्या that is to say that contraction of the ventricle or systole which is ventricular systole that takes 0.3 seconds and because of this, the ventricles will become empty they will become empty and after that, the next phase which is atrial and ventricular diastole now the ventricles will relax in it the atria will relax in it and the ventricle will relax in it and this is their resting period and that is why the heart is not tired it is not fatigued because of this fact that in this cardiac cycle this rest also makes the heart that is half of the time, 50% of the time this is its relaxation time and during this time this blood comes again in the atria and the ventricles so it takes about 0.4 seconds that is why this is a cycle of 0.8 seconds and this is what we call a cardiac cycle so one cardiac cycle takes about 0.8 seconds so the heartbeat can be differentiated into three phases which have a relaxation phase and in which the blood fills in the atria, in the ventricle whose total time that is about 0.4 seconds now during this phase the atria and ventricle relax so the deoxygenated blood enters the right atrium through the vena keva and at the same time the oxidated blood enters the left atrium through the pulmonary vein which we saw in this diagram so the blood fills in the heart so as the atria are filled up with blood they have more pressure than the ventricles after that the next phase is atrial systole and ventricle diastole as the name suggests the atrial contract and the ventricle diastole will relax and that extends for about 0.1 seconds after that the atrial diastole and ventricle systole which takes 0.3 seconds and this is the phase during this phase the blood moves inside the body and inside the aorta so pumping the blood is pulmonary arteries and aorta it pumps in both of them by the contraction of the ventricles now this follows the first phase the relaxing phase again with the last 0.4 seconds now this completes the cardiac cycle extending over 0.8 seconds the heart of an average adult beats more than 100,000 times without fatiguing so this is the rate if we calculate that is in a minute 72 times then you can say that in a day it beats 100,000 times and then we can calculate a person's heart beat which beats in 60 years of age or 70 years of age and this is an organ which is not fatigued I am repeating this it is to be highlighted that it relaxes after the heart beat and during this relaxation in the heart for the next for the start of the next cycle this is the cardiac cycle