问题
问答题
请简述止吐药的分类和作用机制。
答案
参考答案： 止吐药物可阻断呕吐神经反射环的传导，达到止吐的临床治疗效果。该反射环受多种神经递质影响，如组胺、乙酰胆碱、多巴胺和5-羟色胺。止吐药，现以其作用靶点和作用机制(即桔抗的受体)分为抗组胺受体止吐药、抗乙酰胆碱受体止吐药、抗多巴胺受体止吐药和抗5-HT3受体的5-HT3受体拮抗剂。
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请简述止吐药的分类和作用机制。
参考答案： 止吐药物可阻断呕吐神经反射环的传导，达到止吐的临床治疗效果。该反射环受多种神经递质影响，如组胺、乙酰胆碱、多巴胺和5-羟色胺。止吐药，现以其作用靶点和作用机制(即桔抗的受体)分为抗组胺受体止吐药、抗乙酰胆碱受体止吐药、抗多巴胺受体止吐药和抗5-HT3受体的5-HT3受体拮抗剂。
My parents have always loved everything about India, so a year ago we went on holiday there. It’s a wonderful 15 with beautiful scenes and interesting people . However, I didn’t enjoy Indian 16 very much. On the second day we planned to see an old palace. At the 17 they said. “If you go by train, it’ll take you only two hours to get there.” However, the hot 18 took over four hours. I was very 19 when we got there , so we had some rice and vegetables with bread in a small restaurant. We were 20 to find it was quite nice. I wasn’t full up though and I saw a man nearby eating some little meatballs. I said to my dad, “I’ve been eating rice all week. Can I have some meatballs please?” Well, they looked delicious so I ate the first one very 21 . I was just putting the second one in my mouth when I felt myself 22 —my mouth was on fire! I started to cough（咳嗽）and there were tears (泪水)in my eyes. I couldn’t 23 how spicy (辛辣的) it was! I drank about ten glasses of water but the worst thing was everyone was laughing at me. You couldn’t make me eat another Indian meatball for all the 24 in the world!
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