Using a Micropipette,a Neuroscientist Injects an Axon with Enough Na⁺

question 94

Multiple Choice

Using a micropipette,a neuroscientist injects an axon with enough Na⁺ ions to move the membrane potential +25mV (from resting) .What happens next?

• A)The membrane potential will be at the Na⁺ equilibrium potential.
• B)Voltage-gated Na⁺ will be triggered to open.
• C)The neuron membrane will be hyperpolarized.
• D)Na⁺ channels will all be inactivated.
• E)None of the answer choices are correct.