One of the most amazing properties of our heart Absolute synchronicity! The contraction of the different parts of this eternal motor and the work of its valves are amazingly accurately interconnected - to a fraction of a second. Atrial contraction lasts 0.1 second and ventricular contraction about 0.3 second. And, for example, if there is a noticeable shift in one of these numbers and it is not coordinated with all the other rhythms - the work of the heart will be disturbed because of which the tissues somewhere will not receive oxygen🙌🏻