Which Conducts an Action Potential Faster and Why

question 50

Multiple Choice

Which conducts an action potential faster and why?

• A) myelinated fibers; the action potential moves through the myelin which allows it to travel faster
• B) myelinated fibers; the action potential jumps from one node of Ranvier to another
• C) unmyelinated fibers; the absence of myelin allows the action potential to travel faster
• D) unmyelinated fibers; the action potential jumps from one node of Ranvier to another
• E) unmyelinated fibers; the ions can move in and out of the cell faster without the myelin coating

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Definitions:

Inner Ear

The inner part of the ear that contains structures responsible for hearing and balance, including the cochlea and vestibular system.

Spinothalamic Tracts

Nerve pathways in the spinal cord that carry sensory information related to pain and temperature to the brain.

Ventrolateral

Relating to the front and side of a bodily structure, often used in reference to specific parts of the brain or the body.

Thalamus

A midline symmetrical structure within the brain that relays sensory and motor signals to the cerebral cortex.