作为阳离子,镁在人体内的含量居第四位。由于新近发现镁在多种内源性调节系统中都有作用,因而成为近年来研究的焦点。镁能催化和活化体内300多种酶,元素镁还为能量储存和利用所必需。没有镁,叶绿素就不能合成,而妨碍植物的光合作用,最终导致地球上生命的结束。此外,镁也是维持心肌细胞动作电位第4时相正常的阈电位所 As a cation, magnesium ranks fourth in the human body. As recently discovered that magnesium plays a role in various endogenous regulatory systems, it has become the focus of recent years. Magnesium can catalyze and activate more than 300 enzymes in the body, and elemental magnesium is also required for energy storage and utilization. Without magnesium, chlorophyll can not be synthesized, which hinders the photosynthesis of plants and ultimately leads to the end of life on Earth. In addition, magnesium is also the normal threshold potential to maintain cardiomyocyte action potential at the 4th phase