吸入二氧化碳对家兔呼吸运动的影响

吸入二氧化碳对家兔呼吸运动的影响(10页)Good is good, but better carries it.精益求精，善益求善。吸入二氧化碳对家兔呼吸运动的影响摘要：目的：观察血液中化学因素（如 PCO₂、PO₂ 和[H+]）改变对家兔呼吸运动（呼吸频率、节律、幅度）的影响，初步探讨其作用部位，并分析机制。观察减压神经及迷走神经在家兔呼吸运动调节中的作用，初步探讨其机制。掌握气管插管术和神经血管分离术。方法：运用气管插管术和颈部神经分离术暴露家兔气管、减压神经和迷走神经，向气管通入 CO₂，并用生物信号采集处理系统记录家兔呼吸流量和频率。结果：持续吸入 CO 10₂秒钟，家兔呼吸流量由0.298ml/s 增至 1.26ml/s，呼吸频率由 48 次/分增至 52.9 次/分。结论：通过增加吸入 CO₂ 浓度，刺激外周化学感受器，家兔呼吸变深变快。关键词：CO₂ 浓度；呼吸运动；外周化学感受器Abstract: Objective:To observe the blood chemistry factors (such as PCO , PO and [H+]) on rabbit respiration (respiration frequency, ₂₂rhythm, amplitude) effect, discuss its site of action, and analyze the mechanism. To observe the effect of decompression of nerve and vagus nerve in the regulation of respiratory movement in rabbits. Master of tracheal intubation and nerve and blood vessel separation. Method: Use tracheal intubation and neck nerve dissection exposure of rabbit trachea, decompression of the nerve and the vagus nerve and into the trachea to pass into the CO , biological signal acquisition and process ₂system to record the rabbit respiratory flow and frequency.Results: The inhaled CO 10 seconds, the respiratory flow in rabbits by 0.298ml/s ₂increased to 1.26ml/s, respiratory frequency by 48 beats per minute increase to 52.9 beats per minute. Conclusion: Stimulation of peripheral chemoreceptors by increasing the concentration of inhaled CO , then ₂rabbits breath deeper and faster .引言：呼吸运动是呼吸中枢节律性活动的反应。在不同生理状态下，呼吸运动所发生的适应性变化有赖于神经系统的...