Which of the Following Statements Is TRUE

question 26

Multiple Choice

Which of the following statements is TRUE?

• A)In the central nervous system Schwann cells serve as guideposts to show axons where to terminate when regeneration occurs.
• B)In the peripheral nervous system Schwann cells serve as signposts to guide axons to their appropriate end points.
• C)Schwann cells cannot help damaged axons because neither the central nor the peripheral nervous system can regenerate.
• D)Schwann cells are present only in the developing organism and thus have nothing to do with regeneration.

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Definitions:

Interaction Term

In statistical models, a variable created by multiplying two or more variables together to investigate if the effect of one variable on the dependent variable is different at different levels of the other variable.

Coefficient

A numerical constant placed at the beginning and serving as a multiplier to a variable in an algebraic formula.

Nominal Variables

Variables that represent categories without any inherent order or ranking among them.

Interaction Term

A variable in statistical models that captures the effect of two or more variables simultaneously affecting a response variable.