The Speed at Which Nerve Impulses Travel Down an Axon

question 33

Multiple Choice

The speed at which nerve impulses travel down an axon are greatly increased by:

• A)myelin.
• B)refractory periods.
• C)the length of the axon.
• D)calcium channels.

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Definitions:

Correlated

Correlated refers to a statistical relationship between two or more variables where a change in one is associated with a change in another, indicating a possible connection or causality.

Sampling Bias

A statistical bias that occurs when a sample is collected in such a way that some members of the intended population are less likely to be included than others, resulting in a non-representative sample.

Double Blind Procedure

A double-blind procedure is a research method in which both the participants and the researchers are unaware of who has been assigned to the control or experimental group, reducing bias.

Placebo Effect

A phenomenon wherein a patient's symptoms can improve after receiving a treatment with no therapeutic value, purely because of the individual's belief in the treatment's efficacy.