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在人的生命活动过程中,需要不断从外界环境中获得营养物质。这些营养物质包括:蛋白质、糖、脂肪、水、无机盐和维生素。因此,维生素是维持生命活动不可缺少的六大营养要素之一。本讲拟从五个方面对维生素的基础与临床作一概括讲述。一、维生素的定义与命名维生素是维持机体细胞结构和功能所必需的一类低分子有机化合物,需要量很微,但体内不能合成或合成很少,必须由食物供给,其主要功用在于参加体
In the course of human life and activity, it is necessary to continuously obtain nutrients from the external environment. These nutrients include: protein, sugar, fat, water, inorganic salts and vitamins. Therefore, vitamins are one of the six major nutritional elements that are indispensable to the maintenance of life. The lecture from five aspects of basic and clinical vitamins for a general description. First, the definition and naming of vitamins Vitamins are essential to maintain the structure and function of the body cells of a class of low molecular weight organic compounds, the need is very small, but the body can not be synthesized or synthesized rarely, must be supplied by food, its main function is to participate in the body