问题
问答题 简答题
简述β受体阻断药的外周β受体阻断及其效应变化。
答案
参考答案：
一.心脏β1受体阻断：使心收缩力、传导、心率、心输出量及心肌耗氧量降低。血管β2受体阻断：可引起血管收缩，使冠脉血流减少。支气管β
二、受体阻断：引起支气管收缩，诱发哮喘。突触前膜β受体阻断，邢分泌减少。另外可抑制脂肪和糖原分解及肾素分泌减少等。
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简述β受体阻断药的外周β受体阻断及其效应变化。
参考答案：
一.心脏β1受体阻断：使心收缩力、传导、心率、心输出量及心肌耗氧量降低。血管β2受体阻断：可引起血管收缩，使冠脉血流减少。支气管β
二、受体阻断：引起支气管收缩，诱发哮喘。突触前膜β受体阻断，邢分泌减少。另外可抑制脂肪和糖原分解及肾素分泌减少等。
完形填空（10分） 阅读下面短文，从各题A、B、C、D中选出能填入文章中相应空白处的最佳答案。 Dear David, Thank you very much 1 your letter. Beijing 2 beautiful! People in Beijing are friendly (友好的). 3 I like Beijing and I like China. Now I’m fine and I’m busy with my lessons. I have seven classes every day. There are 4 in the morning and three in the afternoon. I have nine 5 this term (学期). I like math, biology and history. My 6 subject is science, because it is very interesting. My English is very 7 , and I like it. But I 8 like Chinese, because it is too difficult 9 me, and I can’t learn it well. Do you play soccer? Can you 10 Chinese? I hope you can come to China one day. Yours, Jim
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