<prompt> Mean circulatory filling pressure isDifference between systemic and pulmonary aerial pressureDifference between central venous pressure and central aerial pressureMean atrial pressureAerial pressure taken at the point when hea stops beating  <response>: When hea pumping is stopped by shocking the hea with electricity to cause ventricular fibrillation or is stopped in any other way, flow of blood anywhere in circulation ceases a few seconds later. Without blood flow the pressure everywhere in circulation become equal. This equilibrated pressure level is called mean circulatory filling pressureRef: Guyton and Hall, Textbook of medical physiology, 2ndSouth Asia Edition 