AS Biology help with cell signalling please?

I have to complete the gaps in this passage for my biology homework about cell signalling and receptors. I've searched all over the net and in text books but I am struggling to understand :( Can you help me fill in these spaces?

The receptor may form an ion channel. for example, the transmitter substance acetylcholine is released by nerve cells at a (space). at the membrane of the next nerve cell, it binds to a receptor and causes (space) ions to flood into the second cell, starting a new nerve impulse.

Any help really appreciated!!!

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  • 1 decade ago
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    ACh is released by nerve cells at a SYNAPSE

    it causes SODIUM ions to flood into the second cell (and potassium flows out).

    Hope that helps

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