SENSORY ORGANS ANATOMY. 1  Sensory organs are very highly developed and specialized organs that are an extension of the central nervous system, with a sole function to take in information and relate it to the brain. The sensory neurons are highly adapted to detect changes of both external and internal changes in the environment and report these changes to the brain.
If you break a mercury thermometer or light bulb, a small amount of liquid mercury may spill out. Liquid mercury can separate into small beads, which can roll some distance away. The mercury may also evaporate into vapour. However, this small amount of mercury is extremely unlikely to cause problems for your health.
Mercury is a chemical element with the symbol Hg and atomic number 80. It is commonly known as quicksilver and was formerly named hydrargyrum.Mercury is the only metallic element that is liquid at standard conditions for temperature and pressure.Mercury is used in thermometers, barometers, manometers and many other devices.Concerns about the element's toxicity have led people to look for alternatives such as alcohol or galinstan-filled thermometers.ercury is used in thermometers, barometers, manometers and many other devices. Concerns about the element's toxicity have led people to look for alternatives such as alcohol or galinstan-filled thermometers.