What measurement in mmHg represents standard atmospheric pressure?

Standard atmospheric pressure is defined as the pressure exerted by the weight of the atmosphere at sea level. This standard measurement is universally recognized as 760 mmHg, which corresponds to the pressure that supports a column of mercury 760 millimeters high in a barometer. This value is significant in various scientific fields, especially in physiology and meteorology, as it serves as a baseline for measuring other pressures, such as blood pressure or pressure in the lungs.

Understanding standard atmospheric pressure is crucial for interpreting physiological processes, as many body functions depend on the balance and regulation of pressure. The other readings do not represent the established norm for atmospheric pressure, highlighting why 760 mmHg is the correct and accepted standard in both scientific and clinical settings.