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Showing posts from February, 2010


9 Climate and our Body

Climate affects our body system very profoundly. The effects are primarily sensed by the skin. Five types of sensations are involved with the skin. The Touch-Pressure (mehanic-o receptors), Cold-Warmth feeling (thermo receptors), Pain and Itch. Cold is a consequence of contraction of blood vessels and warmth is felt due to dilation of blood vessels; both are felt by the same receptors.

Our body functions as a thermo equilibrium system. The thermal bearing capacity has upper and lower limits. The pain occurs at the upper limit of 52̊ C /126̊ F and has a lower limit of 3̊ C / 37̊ F. The Optimum or the comfort level temperature depends on the level of acclimatization. In certain acute work conditions like mines, metal smelting plants, textile plants, cold storage, the level of efficiency or productivity depend on the endurance level and adaptability of the body. A body may endure or adopt to certain abnormal conditions for a period of time, but there may occur si…