Opening of the Na+ Activation Gates in Motor Neurons Is

question 17

Multiple Choice

Opening of the Na+ activation gates in motor neurons is caused by

• A) Depolarization of the membrane to -50 mV
• B) Binding of acetylcholine
• C) Binding of Ca²⁺
• D) Na⁺ passing through the channel
• E) Binding of tetrodotoxin

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