Procaine (Novocain)is a Drug That Blocks Voltage-Gated Na⁺ Channels

question 5

Multiple Choice

Procaine (Novocain) is a drug that blocks voltage-gated Na⁺ channels.  When present,what would happen in a neuron?

• A)Graded potentials are possible,but the neuron will not have the depolarizing phase of the action potential.
• B)Neither graded potentials nor action potentials will occur.
• C)Graded potentials are possible and the neuron will have the depolarizing phase of the action potential,but will be unable to repolarize.
• D)No phase of the action potential will be affected.

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Definitions:

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how much the individual values differ from the mean.

Snowfall

The phenomenon of meteorological conditions leading to the deposition of snow on the ground.

Z-Score

A measure that indicates the number of standard deviations a data point is from the mean.

Standard Deviation

A measure of the amount of variation or dispersion in a set of data values, indicating how spread out the data points are from the mean.