本题目来源于试卷: SL/HL Topic C2.2 Neural signalling，类别为 IB生物学
[问答题]
5. Outline three reasons wm0wwo eh ,drdlk6q5u04 wfj;3hy azbn 51u,: +t2exq8 kquw,ofmgn action potential can only pass in one direction across a squ o:8,w2 ,qtgzb+ e kmf5xnu1ynapse
参考答案: The neurotransmitter is only synthesised in the pre-synaptic neurone endings.
Vesicles of transmitter substance are only released from the pre-synaptic membrane.
Receptor sites are only present in the post-synaptic membrane.
The entry of ions (occurs at both sides of a synapse) but has a different effect at the pre-synaptic neurone than the post-synaptic membrane.
本题详细解析:
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