来自《耶鲁大学开放课程：生物医学工程探索 第13集 第13集》

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  so the tip is down here,
  因此尖端在下方这里
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  the major vessels are near the center line.
  主要的血管位于心脏中心线附近
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  The heart has muscular walls.
  心脏有肌肉壁
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  The walls of the heart are called the myocardium, muscle heart.
  心脏的肌肉壁叫做心肌 心脏肌肉
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  'Myo' is muscle, 'cardium' is heart
  Myo 的意思是肌肉 cardium 意思是心脏
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  and there's muscular walls so it's a big muscle basically.
  这是肌肉壁 基本上就是一块很大的肌肉
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  There are blood vessels on the surface
  在心脏表面有很多血管
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  and so this is the aorta coming up here.
  主动脉由这里发出
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  Where this arrow is here is the aorta,
  这个箭头所指即为主动脉
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  this is the aortic arch,
  这是主动脉弓
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  and then goes down to the abdomen and up to the brain.
  从这里向下去到腹部 向上去到脑部
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  These are those coronary vessels that I mentioned earlier.
  这些是冠状动脉 我之前提到过