科学家在研究人体的形态构造和生理活动时,发现了许多有趣的统计数字。人体——三分之二是水根据科学家的分析,人体的化学成分是这样的：60％是水,18％是碳,3％是氮,1．5％是钙,1％是磷,另外还有一些微量的矿物质, 如铁、铜、锌、硼和硅等。一个体重24千克的小孩,其中有15千克是水分。 206块骨头人的全身有206块骨头,其中最长的是股骨,约是人身长的四分之一。最小的骨头在耳朵里,叫听小骨,一共有3块,它们巧妙地连在一块,起着传递声音和保护鼓膜的作用。这3块小骨头一共才有50毫克重。 20多万根头发成年人的头发,平均每人约有20多万 Scientists have discovered many interesting statistics while studying the morphological and physiological activities of the human body. Human body - two thirds of water According to the analysis of scientists, the body’s chemical composition is this: 60% is water, 18% is carbon, 3% is nitrogen, 1.5% is calcium, 1% is phosphorus, the other There are some trace minerals, such as iron, copper, zinc, boron and silicon. A child weighing 24 kg, of which 15 kg is water. 206 Bones The body has 206 bones throughout the body, the longest of which is the femur, which is about a quarter of the body length. The smallest bones in the ear, called Listening to the bones, a total of three, they are cleverly connected together, plays a role in transmitting sound and protecting the tympanic membrane. This 3 small bones a total of only 50 mg weight. More than 200,000 hair adult hair, an average of about 20 million each