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Properties of the Heart Lab Physiology 1.) Shortening Systole does not hinder 'ventricular filling' in particular....

Properties of the Heart Lab Physiology

1.) Shortening Systole does not hinder 'ventricular filling' in particular. Explain why is this so.

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Answer #1

Because the ventricular filling is caused by artrial systole (active filling) which inturn causes the (a) wave in the jugular venous pressure trace. The (c) waves coincides with the onset of ventricular systole , making the tricuspid valve buldge into the atrium and raising the pressure there, The (v) wave is due to the filling of the atrium while the tricuspid valve is shut, and the upward movement of the tricuspid valve at the end of the ventricular systole.Active filling contributes approximately 5% of cardiac output in a normal heart and is lost in atrial filtration. These may not be able to noticed by men/women with normal left ventricular function.

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