Once the "Threshold" for an Action Potential Is Reached What

question 81

Multiple Choice

Once the "threshold" for an action potential is reached what is the sequence of events that occur?
1) Potassium channels are activated and potassium ions move out of the neuron.
2) Sodium channels are activated and sodium ions move into the neuron.
3) The interior of the neuron becomes more negatively charged than the exterior.
4) The interior of the neuron becomes more positively charged than the exterior.

• A)1,3,4,2
• B)2,4,1,3
• C)4,1,2,3
• D)3,2,1,4

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Definitions:

Stem-And-Leaf Plot

A graphical method for displaying quantitative data, where each number is split into a "stem" (the leading digit(s)) and a "leaf" (the last digit).

Mode

The value that appears most frequently in a data set.

Modal Class

The class interval in a frequency distribution that has the highest frequency, representing the most common value or range of values.

Positively Skewed

A distribution characterized by a long tail to the right side, indicating that a majority of the data points are concentrated to the left of the mean.