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寒风凛冽的冬天,露天作业的工人,如建筑工、搬运工、司饥、冷藏库、啤酒厂的工人,应该认真做好防寒,这不仅可以减少疾病和冻伤,还可以杜绝事故的发生。 冬季,人体的生理功能会发生一系列的改变,象脉搏及呼吸次数变慢,血压和体温稍有下降。身体的有些部位,如离心脏较远的耳朵、脚、鼻等,是血管分布的末梢。尤其是足部,由于血液供应少,皮下脂肪薄,保温力较差,加上潮湿的鞋袜水分蒸发时,再吸收很多的热量,就更容易受冻。同时,局部过冷还会反射地引起全身的抵抗力降低。经研究证明,如果把人的脚浸在摄氏十五度的冷水,就会发现人的鼻粘膜血管扩张、充血,随
Cold and windy winter, open-air workers, such as builders, porters, workers, refrigerators and breweries, should take good care of the cold to reduce disease and frostbite and prevent accidents. In winter, there are a series of changes in the physiological functions of the body, such as slowing of pulse and breathing, and slight decrease of blood pressure and body temperature. Some parts of the body, such as the ear away from the heart of the heart, feet, nose, etc., is the end of vascular distribution. Especially the foot, due to the lack of blood supply, thin subcutaneous fat, thermal insulation is poor, coupled with wet shoes and water evaporation, and then absorb a lot of heat, more vulnerable to cold. At the same time, local overcooling can also cause a decrease in body resistance. The study proved that if the human foot soaked in fifteen degrees Celsius cold water, you will find that human nasal mucosal blood vessels dilate, congestion, with