Video: The Sensory System: Definition, Parts & Functions. This lesson will examine how the sensory systems are integrated and how they function as a whole. Instead of telling you ears hear and eyes see, we will examine how these systems are actually very similar in terms of reception, signals, and translations.
Mercury is a silvery-white metal element that is liquid at ordinary room temperature; it has no taste or smell. It occurs as metallic mercury (Hg), as cinnabar (HgS) and in perhaps 25 other in organic mineral compounds. The elemental form (Hg) vaporizes at any temperature down to almost 40Â° below zero. The vapor also has no taste or smell. The specific gravity of mercury is 13.546; therefore, it is heavier than lead and, like lead and other heavy metals, it is a potent poison. Exposure to metallic mercury or mercury compounds, even in small quantities over a period of time, can cause severe poisoning.
Facts About Mercury. Mercury is an element that has been historically used to manufacture chemicals or appliances (such as thermometers and light bulbs). But with increased industrialization came increased mercury emissions that poison our air and water, causing a ripple of ill health effects.ercury poisoning is also a possible health risk to those who consume mercury-laden fish. Immediate symptoms of mercury poisoning include: 1  Impairment of peripheral vision. 2  A âpins and needlesâ sensation in the hands, feet and around the mouth. 3  Lack of coordination. 4  Impairment of speech, hearing and walking.