Annual deaths from tornadoes, earthquakes and floods together total fewer than 200. The most deadly heat wave in recent years occurred in Chicago over a week in July 1995, when temperatures hovered around 100 degrees.
Cardiac Cycle: 1st Systole Phase. During the systole phase, the right ventricle receives impulses from the Purkinje fibers and contracts. The atrioventricular valves close and the semilunar valves open. The de-oxygenated blood is pumped into the pulmonary artery.
Testing Procedures with Multimeter. Unplug the connector from oil pressure switch and check the connectivity between the contacts. If the switch is with two pins, the check should be between the pins. In case when the switch is with only one pin, then the check should be between the pin and mass (negative pole).