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Questions and Answers
Which component of an alpha motor neuron activates a skeletal muscle cell?
Which component of an alpha motor neuron activates a skeletal muscle cell?
- Terminal component
- Intermediate component
- Distal component (correct)
- Proximal component
What triggers the voltage-gated Ca+ channels to open in the terminal axon of an alpha motor neuron?
What triggers the voltage-gated Ca+ channels to open in the terminal axon of an alpha motor neuron?
- An action potential reaching the terminal axon (correct)
- A decrease in the concentration of Ca+ outside the cell
- A change in the shape of the Ca+ channels
- An increase in the concentration of Ca+ inside the cell
What is the role of AcH in the activation of a skeletal muscle cell by an alpha motor neuron?
What is the role of AcH in the activation of a skeletal muscle cell by an alpha motor neuron?
- It binds with ligand-gated Na+ channels on the postsynaptic membrane (correct)
- It fuses with intracellular synaptic vesicles
- It increases the concentration of Ca+ inside the cell
- It triggers the voltage-gated Ca+ channels to open
