Nerve Impulses Travel More Slowly in Babies Than in Older

question 52

Multiple Choice

Nerve impulses travel more slowly in babies than in older children and adults because:

• A) dendrites have not yet developed spines in infants.
• B) the myelin sheaths on axons are not yet fully developed in infants.
• C) the infant does not have as many synaptic connections.
• D) axons are much shorter in infants.

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Definitions:

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A theory that focuses on the immediate causes and mechanisms underlying a biological trait or behavior.

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