internal organ pain referred distant body parts

Pain from an organ can be felt somewhere else in the body

Pain from internal organs can be hard to locate and may be felt in a different place, often closer to the skin. Internal organs are very sensitive to stretching, poor blood flow, and inflammation, but can be surprisingly insensitive to cutting or burning.

Much of central Boston stands on land that didn't exist naturally

Boston expanded dramatically by filling tidal flats, marshes and shallow water. Engineers used soil excavated from hills and material transported from elsewhere to create new neighborhoods. Areas that now look like ordinary city streets were once part of the harbor. The city's modern shape is partly a massive human-made landscape.

Mercury is the only metal that is liquid under standard conditions

Mercury is the only metal that is liquid at standard temperature and pressure. Its atoms hold one another unusually weakly, partly because effects from relativity change the behavior of its outer electrons.

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internal organ pain referred distant body parts

Pain from an organ can be felt somewhere else in the body

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