It isn't. But due to earlier use, as in tooth fillings, traces of it can be detected in the body.
because
To read blood pressures
Mercury is used in blood pressure apparatus for its density and stable liquid state under a range of temperatures, allowing for accurate measurement. However, due to environmental and health concerns associated with mercury, digital or aneroid blood pressure monitors are now more commonly used.
Because mercury is 13.6 times denser than water it is able to measure higher pressures.
mm Hg is also an abbreviation for millimeters of mercury, commonly used as a unit of pressure to measure blood pressure in medicine.
A sphygmomanometer is medical device that is used to measure the blood pressure of a person. It consists of a cuff that can be inflated to stop the blood flow and mercury meter or manometer that is used to measure the blood pressure. It is commonly used along with the stethoscope. It was invented by Samuel Siegfried Karl Ritter von Basch in 1881.
The full form of mm Hg is millimeters of mercury. It is a unit of pressure commonly used in medicine to measure blood pressure.
The complete unit of measurement for blood pressure, including a systolic reading of 120 millimeters of mercury, is expressed as mmHg. This unit indicates the pressure exerted by the blood against the walls of the arteries, with "mm" representing millimeters and "Hg" standing for mercury, which is the substance historically used in barometers and sphygmomanometers.
mercury is only used in a mercury battery
mm Hg (milimeters of mercury) usually measured with a Stethoscope and a sphygmomanometer .
Mercury is used in sphygmomanometers because it is a dense liquid that moves easily within a tube, providing accurate blood pressure readings. Its high density allows for precise measurement of small changes in pressure, making it a reliable element in these medical devices. Additionally, mercury does not adhere to the walls of the tube, ensuring consistent and accurate readings over time.
mercury was used for thermometers and baramoters