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心交感神經末梢釋放的遞質是
心交感神經末梢釋放的遞質是
更新时间:2024-09-11 07:25:00

  1、去甲腎上腺素。

  2、心交感神經:心交感神經興奮時,其節後纖維釋放的去甲腎上腺素與心肌細胞膜上的腎上腺素能β_1受體相結合,可使心率加快,興奮經房室交界的傳導速度加快,心房肌心室肌收縮力加強,結果導緻心輸出量增加。

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