来自《耶鲁大学开放课程：生物医学工程探索 第14集 第14集》

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  There's a valve in going from the right atrium to the right ventricle
  右心房和右心室之间有一道瓣膜
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  I'm just going to put all the names up on the
  我在这里只是列举这些名词
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  there's a valve in going from the right atrium to the right ventricle
  右心房和右心室之间有一道瓣膜
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  and that's called the tricuspid valve.
  称为三尖瓣
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  There's a valve in going from the right ventricle
  从右心室到肺动脉之间
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  into the pulmonary artery and that's called the pulmonary valve.
  还有一个称为肺动脉瓣的瓣膜
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  You can't see it very well here but it's up here.
  可能看不清楚 瓣膜在这
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  There's a valve in going from the left
  左心房到左心室之间
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  atrium into the left ventricle and that's call the mitral valve,
  有一道称为二尖瓣的瓣膜
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  and a valve in going from the left
  从左心室到主动脉
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  atrium into the aorta and that's called the aortic valve.
  有一道称为动脉瓣的瓣膜
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  There's four valves that
  这四个瓣膜非常重要