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心交感神经末梢释放的递质是

更新时间: 2021-01-13 09:24:39     

1、去甲肾上腺素。

2、心交感神经:心交感神经兴奋时,其节后纤维释放的去甲肾上腺素与心肌细胞膜上的肾上腺素能β_1受体相结合,可使心率加快,兴奋经房室交界的传导速度加快,心房肌心室肌收缩力加强,结果导致心输出量增加。

关键词: 交感神经 末梢 释放

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