离体小肠段的生理特性 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 目的要求?了解哺乳动物离体肠段的一般特性。?学****离体器官灌流的一种方法。 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 基本原理: ?哺乳动物的消化管平滑肌具有肌组织特有的特性,如兴奋性、传导性和收缩性等。但消化管平滑肌又有其特点,即①兴奋性较低,收缩缓慢,②富有延展性, ③具有紧张性,④自动节律性,⑤对化学、温度和机械牵张刺激较敏感等。这些特性可维持消化管内一定压力,保持胃肠等一定形态和位置,适合于消化管内容物的理化变化,在体内受中枢神经系统和体液因素的调节。?将离体组织器官置于模拟体内环境的溶液中,可在一定时间内保持其功能。本实验以台氏液做灌流液,在体外观察及记录哺乳动物离体肠段的一般生理特性。 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright
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