大家都知道,我国古典文学名著《红楼梦》中,贾宝玉有句口头禅:“女儿是水做的骨肉,男子是泥做的骨肉。”其实,何止女儿,男子也同样是水做的骨肉。据科学家测定:受精卵发育成胚胎时,90%是水;婴幼儿体内水份占其体重的70%以上,成年人体内水份为70%左右;进入老年期则下降至体重的60%以下。就人体内部来说,细胞内液约占体重的40%,细胞外液约占体重的15%;占体重4%的血液,含水量达91-93%;肌肉含水75-80%;含水最少的骨骼,仍有约 We all know that in our classic classics of “Dream of Red Mansions”, Jia Baoyu has a mantra: “My daughter is made of flesh and blood and man is made of mud.” "Actually, no matter how many daughters and men are also flesh and blood . According to the scientists’ determination, when the fertilized egg develops into an embryo, 90% is water; in infants, the body water accounts for more than 70% of the body weight, and the adult body moisture is about 70%; in the old age, it drops below 60% of the body weight . Intracellular fluid, intracellular fluid accounts for about 40% of body weight, extracellular fluid accounts for about 15% of body weight; 4% of body weight of blood, water content of 91-93%; muscle water 75-80%; minimal water The skeleton is still about