Skeletal Muscle Cell Activation Quiz
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Questions and Answers

Which ion triggers the fusion of intracellular synaptic vesicles with the inside of the membrane in the terminal axon?

  • Chloride (Cl-)
  • Calcium (Ca+) (correct)
  • Potassium (K+)
  • Sodium (Na+)

    • What is the role of Acetylcholinesterase in the muscle cell membrane?

  • It makes new Acetylcholine neurotransmitters by binding with acetic acid molecules.
  • It triggers the voltage-gated calcium channels to change shape and allow calcium ions to flow inside the cell.
  • It binds with ligand-gated Na+ channels on the postsynaptic membrane and opens Na+ channels.
  • It binds with acetic acid and breaks down Acetylcholine into choline and acetic acid. (correct)

    • What happens when Acetylcholine binds with ligand-gated Na+ channels on the postsynaptic membrane?

  • It breaks down Acetylcholine into choline and acetic acid.
  • It opens Na+ channels and allows Na+ ions to pass through and go inside the cell. (correct)
  • It makes new Acetylcholine neurotransmitters by binding with acetic acid molecules.
  • It triggers the voltage-gated calcium channels to change shape and allow calcium ions to flow inside the cell.

    • Which ion triggers the voltage-gated Ca+ channels to change shape and allow Ca+ to move into the cytosol of the terminal axon?

    <p>None of the above</p> Signup and view all the answers

    What is the role of Acetylcholine in the skeletal muscle cell activation process?

    <p>It binds with ligand-gated Na+ channels on the postsynaptic membrane.</p> Signup and view all the answers

    What happens to the Acetylcholine that is broken down by Acetylcholinesterase in the muscle cell membrane?

    <p>It goes back into the terminal axon to make new Acetylcholine neurotransmitters.</p> Signup and view all the answers

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