Pressure, volume, electrical, and sound changes occur during each cycle.Heart sounds are created primarily from turbulence in blood flow created by valves closing, not from contraction.Two separate networks of cardiac fibers regulate atrial and ventricular contraction.

The cardiac cycle begins with depolarization of the SA node and atrial contraction.

Each cycle requires a certain length of time for its completion.

• Those who take art therapy find some meaning and value that they carry with them after their sessions • It has been proven that geometric shapes and patterns are soothing to the mind and relieve it of anxiety. Businessmen, lawyers, teachers, journalists and homemakers — who are stressed in their routine lives have found art breaks to be the new stress buster.

Despite being around for some time now, those practising art therapy have found new ways of developing the trend.

Those who take art therapy find some meaning and value that they carry with them after their sessions.

This either helps expedite their therapy process, or find a new tool to aid them in their daily life to meditate and also deal with their emotional ups and downs.Says psychiatrist Dr Pavan Sonar, "By creating a work of art, a person is given a means of externalising powerful emotions that have been internalised, especially in stress, anxiety and depression.When a person artistically creates something which he or she feels is 'good or beautiful', it releases the pleasure chemical dopamine in the brain which helps one enjoy and feel better." Lets you focus on your inner self experience Practising art was a welcome change for a group of kitty party ladies who took a six-session art course, which acted like therapy for them.The latest one is combining mindfulness with doodling and other unstructured arts, like zentangling.It helps train our brain to live in the present without a performance attitude, which needless to say, is very relaxing while also giving beautiful results.The contraction phase is systole, while the filling phase is diastole.