麻黄在作为麻黄汤使用时有发汗作用,而作为越婢汤使用时又有很强的利尿作用。这里仅就麻黄的药理作用从生理学方面加以讨论。肾单位(肾脏的尿生成单位,即肾小球和肾小管这一部份,和汗腺的构造相似,大致可分为分泌部份和再吸收部份(参照图一).肾单位的分泌部 Ephedra has a sweating effect when used as an ephedra soup and has a strong diuretic effect when used as a soup. Here only the pharmacological effects of ephedra are discussed in terms of physiology. Nephron (The kidney’s urine production unit, which is the glomerular and tubular parts, is similar to the structure of the sweat gland and can be roughly divided into secretory and reabsorbable parts (see Figure 1).