Change in Membrane Potential Practice Problems

This refers to a shift in membrane potential toward a more positive value.

A local potential is also known as:

When the activation gates open, it permits the influx of sodium ions into the neuron through the channels, causing the voltage across the neuronal membrane to increase. This increase constitutes to:

Which of the following occurs when the potassium channels start to open?

Which of the following neurons have a short process which divides into proximal and distal branches?

The absolute refractory period is the period during which:

If the resting membrane potential increases and becomes more negative the probability of nerve impulse:

Which of the following best describes the all-or-none principle of the action potential?

John is a 62-year-old man who has been living with Parkinson's disease for the past 8 years. He has been experiencing tremors, stiffness in muscles and poor balance. Which neurotransmitter deficiency is associated with motor symptoms in Parkinson's disease?

Which of the following ion channels is blocked by local anesthetics to interfere with nerve impulse transmission?

Which of the following best describes the effect of multiple sclerosis on neurons?

Why does temporary hyperpolarization occur before the membrane reaches resting potential during the action potential?