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Gaokao Biology Practice Question

4.(6分)动物受到惊吓刺激时,兴奋经过反射弧中的传出神经作用于肾上腺髓质,使其分 泌肾上腺素;兴奋还通过传出神经作用于心脏。下列相关叙述错误的是()

  1. A.兴奋是以电信号的形式在神经纤维上传导的
  2. B.惊吓刺激可以作用于视觉、听觉或触觉感受器
  3. C.神经系统可直接调节、也可通过内分泌活动间接调节心脏活动
  4. D.肾上腺素分泌增加会使动物警觉性提高、呼吸频率减慢、心率减慢

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