铁元素有哪些作用 朱玲 山西省儿童医院 скачать в хорошем качестве

铁元素有哪些作用 朱玲 山西省儿童医院

铁元素有哪些作用 朱玲 山西省儿童医院 锌是人体必需的微量元素，是200多种人体酶的组成物质，广泛参与人体各种代谢过程。锌缺乏或不足时，会造成很多种酶的功能异常，可导致儿童生长迟缓。锌是味觉素的结构成分，缺锌时味觉素合成减少，会导致味觉下降，食欲减退。锌对口腔黏膜上皮细胞的结构、功能、代谢也是一个重要的营养因素，缺锌的时候会引起反复性口腔溃疡。锌对免疫功能的影响也非常明显，缺锌时会导致机体免疫低下，反复感染和腹泻。缺锌还可以直接降低生长调节素刺激软骨生长的生物学效应，影响身高的增长。锌还参与维生素A的代谢，锌缺乏的时候可引起维生素A代谢不良，导致暗适应异常。 What are the functions of iron Zinc is an essential trace element for human body, It is a component of more than 200 human enzymes, Widely participate in various metabolic processes of human body. When zinc is deficient or insufficient, It will cause many kinds of enzymes to function abnormally, Can cause growth retardation in children. Zinc is the structural component of taste element, In zinc deficiency, the synthesis of taste elements decreased, It can lead to decreased taste, Loss of appetite. Zinc is also an important nutritional factor for the structure, function and metabolism of oral epithelial cells, Zinc deficiency can cause recurrent oral ulcers. The effect of zinc on immune function is also very obvious, Zinc deficiency can lead to low immunity, Repeated infection and diarrhea. Zinc deficiency can also directly reduce the biological effects of growth regulators on cartilage growth, Affect height growth. Zinc is also involved in vitamin A metabolism, Zinc deficiency can cause vitamin A metabolism problems, Results in abnormal dark adaptation.