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  1. C. ACh The question is pretty vague, and a person might be able to make a case...

    2 Answers · Science & Mathematics · 02/12/2011

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

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

  3. 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

  4. 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

  5. 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

  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 · 17/04/2012

  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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