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  1. Ion-gated channels as the passage of +/- ions are required to cross the nerve membrane causing the nerve to fire and causing movement.

    1 Answers · Science & Mathematics · 23/09/2010

  2. Actually, the acetylcholine receptor is a ligand based ion channel that increases the permeability to the sodium ion. The later increase in potassium conductivity is caused by the voltage-gated potassium ion channel, not the acetylcholine.

    2 Answers · Science & Mathematics · 30/11/2009

  3. It's either acetycholine or serotonin. I would stick with acetycholine.

    1 Answers · Science & Mathematics · 25/03/2008

  4. acetylcholinesterase breaks down acetylcholine into choline and acetic acid very quickly. this action happens once the synapse occurs to allow for the resetting of the neuron.

    1 Answers · Science & Mathematics · 23/02/2007

  5. ACh-ase is an enzyme which destroys ACh. You can tell because things with -ase endings always are enzymes which destroy the thing that is in their name. so C.

    2 Answers · Science & Mathematics · 29/04/2009

  6. there is an end plate potential (local graded depolarisation) which spreads in both directions. It is above threshold so voltage-gated sodium channels in the muscle cells open and allow the influx of sodium, which then causes...

    1 Answers · Science & Mathematics · 18/04/2012

  7. Constricts the bronchioles.

    1 Answers · Science & Mathematics · 06/05/2009

  8. All of the above. Acetylcholine esterase breaks it down at the synapse, it diffuses away, and some of it is recycled and taken back up by presynaptic cell.

    1 Answers · Science & Mathematics · 02/03/2010

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