日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

您現(xiàn)在的位置: > Language Tips > Easy English > Odd Question  
 





 
為什么我們的關(guān)節(jié)會(huì)發(fā)出響聲?
[ 2007-01-22 11:28 ]

特別推薦:刮掉的體毛會(huì)長得更濃更密嗎?  電子郵件地址中的@是怎么來的?

           手機(jī)會(huì)致癌嗎?  拿破侖到底是怎么死的?

當(dāng)我們蹲下又起來的時(shí)候,常常會(huì)聽到膝蓋關(guān)節(jié)處發(fā)出“咯咯”的響聲;折手指的時(shí)候,就會(huì)聽到手指的關(guān)節(jié)“咯咯”作響。那么,為什么我們的關(guān)節(jié)會(huì)發(fā)出響聲呢?下面這篇文章將為你解釋個(gè)中緣由。 

Do a deep knee bend, and it's very likely you'll hear popping sounds coming from your knee joints. There are also popping sounds when you "crack your knuckles."

What causes the popping sounds? Actually, two separate and distinct sources are responsible for the familiar popping sounds our joints emit.

The sound heard when our knuckles crack, results when a finger joint is extended almost to the end of its range. The joint, surrounded by a lubricating fluid, is encased in a capsule. At times, we intentionally, or unintentionally, extend the joint so far that the gas dissolved in the fluid spontaneously separates from the solution, forming a small bubble, and making a cracking sound. Not until the fluid reabsorbs the gas can the sound be reproduced. Whether or not there is truth to the old wives tale, that cracking ones knuckles enlarges them, remains open to debate.

On the other hand, the sound produced when we do deep-knee bends, is a snapping sound, produced when our tendons, which are merely the fibers that connect muscles and bones, elastically snap into new positions as our joints move under stress. Because the tendons shift back and forth with the movement of the joint, there is no waiting time before this snapping sound can be reproduced.

tendon: 腱

(英語點(diǎn)津 Annabel 編輯)

 
 
相關(guān)文章 Related Stories
 
“手麻了、打響指”怎么說
         
 
 
 
 
 
         
 
 

48小時(shí)內(nèi)最熱門

     

本頻道最新推薦

     
  為什么我們的關(guān)節(jié)會(huì)發(fā)出響聲?
  蜜蜂是怎樣過冬的?
  Carrot, please
  刮掉的體毛會(huì)長得更濃更密嗎?
  Bring it on!

論壇熱貼

     
  how to say "彩鈴" in English?
  請(qǐng)教“電子警察“的英文叫法
  "祖?zhèn)髅胤?怎么譯?
  周星馳的一句臺(tái)詞再譯(c-e)
  “不像話”英語怎么說?
  日常口語趣味翻譯(It's fun!)




主站蜘蛛池模板: 操久久| 精品入口麻豆 | 额去鲁97在线观看视频 | 国产综合亚洲精品一区二 | 伊人艹| 成人福利视频 | 日韩视频一区二区三区 | 99SE久久爱五月天婷婷 | 中文字幕 国产 | 欧美特级限制片高清 | 三级国产短视频在线观看 | 欧美日韩国产中文字幕 | 亚洲精品中文字幕乱码一区二区 | 久久综合五月开心婷婷深深爱 | 欧美操片 | 天天看片中文字幕 | 韩国美女一区二区 | 视频一区二区三区四区五区 | 97精品伊人久久久大香线蕉 | 精品一卡2卡三卡4卡免费观看 | 女人被狂躁视频免费网站 | 一道本视频在线观看 | 亚洲一二三四2021不卡 | 国产精品麻豆视频 | 国产精品久久国产精品 | 第一次破處在线国语视频播放 | 午夜精品一区二区三区在线视频 | 欧美性高清视频免费看www | 国产色婷婷精品综合在线观看 | 欧美日韩中文字幕在线 | 日韩在线观看中文字幕 | 国产精品美女久久久免费 | 250pp久久新| 欧美日韩不卡 | 成年人在线观看视频网站 | 小明www永久免费播放平台 | 国产在线综合网 | 色婷婷久久久亚洲一区二区三区 | 污染版的拳皇 | 99国产精品久久久久久久成人热 | 欧美综合自拍亚洲综合网 |