Name: 正常的心臟如何泵血--費城兒童醫院。 (How a Normal Heart Pumps Blood -- The Children's Hospital of Philadelphia)
Uploaded: 2021-01-14T04:47:59.000Z
Duration: 1 min 1 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

>> THE NORMAL HEART HAS TWO SIDES, A RIGHT SIDE

THE TOP RECEIVING CHAMBERS OR ATRIA, AND THE LOWER CHAMBERS,

A RED BLOOD CELL WILL COME FROM EITHER THE SUPERIOR VENA CAVA

OR THE INFERIOR VENA CAVA AND ENTER INTO THE RIGHT ATRIUM.

THE BLOOD THEN FLOWS ACROSS THE TRICUSPID VALVE

THE RIGHT VENTRICLE THEN SQUEEZES AND EJECTS THAT BLOOD

CELL INTO A VESSEL CALLED THE "PULMONARY ARTERY."

THE PULMONARY ARTERY SPLITS INTO TWO VESSELS EACH GOING TO THE LUNGS.

AS THAT RED BLOOD CELL MAKES ITS WAY THROUGH THE LUNG,

IT RETURNS THROUGH THE PULMONARY VEINS TO THE LEFT ATRIUM.

IT'S PICKED UP OXYGEN THEN GOES ACROSS THE MITRAL VALVE

INTO THE LEFT VENTRICLE, WHICH DOES MOST OF THE WORK IN TERMS

THAT BLOOD CELL IS NOW EJECTED INTO THE AORTA TO SOME ORGAN

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正常的心臟如何泵血--費城兒童醫院。 (How a Normal Heart Pumps Blood -- The Children's Hospital of Philadelphia)

vessel

superior

organ

thick