学术英语听说
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2021.02.24 ~ 2021.06.25
  • 杭州师范大学
  • 建议每周学习3小时
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第3次开课

开始:2021-02-24

截止:2021-06-25

课程已进行至

18/18周

成绩预发布时间 2021-06-22

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杭州师范大学
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杭州师范大学
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杭州师范大学
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杭州师范大学
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Human body

By 陈忆玮 老师 2021-06-11 2171次浏览

Can you describe how digestive system works?

94 回复

  • 陆柒miricle 2021-06-24

    Digestion begins in the mouth . First, the act of swallowingsends food down the esophagus, or throat,into the stomach.Then,like a food mixer,the stomach contracts to break this nourishment down, helped by acid and enzymes. The nutrients , which are now liquid , then travel into the small small intestine ,which can be over six meters long . It is here that most nutrients are transferred into the blood stream .Waste products from the entire process are sent out of the body through the large intestine .

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  • A38池云倩 2021-06-24

    Digestion begins in the mouth when you are eat and swallow,and is completed in the small intestine. First, the act of swallowingsends food down the esophagus, or throat,into the stomach.Then,like a food mixer,the stomach contracts to break this nourishment down, helped by acid and enzymes. The nutrients , which are now liquid , then travel into the small small intestine ,which can be over six meters long . It is here that most nutrients are transferred into the blood stream .Waste products from the entire process are sent out of the body through the large intestine .

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  • A38齐喻 2021-06-30

    First ,we eat and swallow the food and they are turned into our stomach through our esophagus.Then with the help of the enzymes and acid,our stomach contracts with the nurishment so they become the molecules. At last our intestine absorb these nutritions. 

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  • A38齐喻 2021-06-30

    Through the chewing of the mouth, the grinding of the teeth, the stirring and swallowing of the tongue, the movement of the gastrointestinal muscles, the large pieces of food are reduced to small pieces, the digestive juice is fully mixed with the food, and the mass or chyme is pushed down from the mouth to the anus, this process of digestion is called mechanical digestion, or physical digestion

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