Neurons Communicate with Each Other Through Electrical Signals Called Action

question 51

Multiple Choice

Neurons communicate with each other through electrical signals called action potentials.All of these statements are true regarding action potentials EXCEPT _____.

• A) signals are passed by the successive firing of action potentials
• B) K⁺ and Na⁺ are important ions in the nervous system
• C) positive ions move into and out of the axon as the signal is passed
• D) K⁺ and Na⁺ ions are produced by the glial cells
• E) the myelin sheath prevents ions from leaking across the axon membrane

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Definitions:

Dependent Variable

The variable in an experiment that is expected to change or respond as a result of manipulations of the independent variable.

Manipulates

To control or influence a person, situation, or system cleverly, unfairly, or unscrupulously, often to gain an advantage.

Independent Variable

In an experiment, the variable that is manipulated to observe its effect on a dependent variable.

Treatment Variable

A variable manipulated by researchers in an experiment to determine its effect on an outcome measure; also known as the independent variable.