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Today we'll study something interesting. We want to peep into our hearts and see what really happens each time we feel our hearts beating. It is called the CARDIAC OR HEART CYCLE. -------------------------------------------------------------------- The Cardiac Cycle. Describes all the activities of the heart through one complete heartbeat; that is through one contraction and relaxation of the ventricles and atria. Phases of the Cardiac Cycle. The cardiac cycle is majorly divided into two known as the systole and diastole. The Diastole is the phase where the atria and ventricles are in a relaxed mode. - During this phase blood is pumped into both straight from the large veins of systemic circulation; ( superior and inferior Vena Cava) and the pulmonary veins. - Blood fills the ventricles passively as both the mitral and tricuspid valves that are at located between the ventricles and atria are lifted. - The left atrium receives oxygenated blood from the pulmonary vein

Happy week and Happy New month people! It's the last lap of the first quarter already. Time indeed waits for no one. Let me just share a little story today to encourage you. For some years I had this thing in mind to start a blog but usual i just looked at myself and said I couldn't. It kept coming year after year and I kept giving the same kind of excuse. Then sometime last year some friends organized an online class for those who wanted to begin blogging and I signed up not sure I would do anything with the information. But the very first class changed everything. I suddenly realized that it could be done and in two days I set up this and the rest is history. I just want to challenge today, what is that thing you've been putting off and telling yourself that you can't achieve? Step out and do it. All that ' I can't do it' is simply fear speaking. Just get up and do it even if you still feel that fear. It will eventually go away and