读报
登录注册网站首页
 

SUPER SCIENCE

Why are people shorter  when they get older?

作者:TEENS
Aa
  • -   
  •    +

人老了为什么会变矮?

People can become 2.5 to 7.6 cm shorter when they get old. This is mostly because their spines (脊柱) become shorter. Also, their muscles (肌肉) become weak (不强壮的) and they can have a crooked back (驼背). 

点击阅读全文
联系我们  |  诚聘英才  |  关于我们  |  版权声明
© i21st.cn   京ICP备2024066071号-1
 
选择报纸
选择报纸
关闭