Why Are Action Potentials Usually Conducted in One Direction

question 7

Multiple Choice

Why are action potentials usually conducted in one direction?

• A) The axon hillock has a higher membrane potential than the terminals of the axon.
• B) Voltage- gated channels for both Na+ and K+ open in only one direction.
• C) The brief refractory period prevents reopening of voltage- gated Na+ channels.
• D) Ions can flow along the axon in only one direction.
• E) The nodes of Ranvier conduct potentials in one direction.

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Definitions:

Correlational Studies

Method in which researchers assess only the relationship between two variables and do not manipulate one variable to determine its effects on another variable.

Positive Correlation

A relationship between two variables in which they both move in the same direction, meaning as one variable increases, the other variable also increases, and vice versa.

Case Studies

In-depth analyses of individual, group, event, or situation instances to explore causation and outcomes, often employed in social sciences and medicine.

Objectivity

The quality of being unbiased, impartial, or not influenced by personal feelings or opinions in considering and representing facts.