In vertebrates including frogs and humans, nerves communicate with muscles by releasing a neurotransmitter called acetylcholine.

 
  • 包括蛙類(lèi)和人類(lèi)的脊椎動(dòng)物,神經(jīng)與肌肉的聯(lián)系是通過(guò)釋放一種叫做乙酰膽堿的神經(jīng)遞質(zhì)進(jìn)行的。
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