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Questions and Answers
Which type of axons bring information from the somatic sensory receptors to the spinal cord or brain stem?
Which type of axons bring information from the somatic sensory receptors to the spinal cord or brain stem?
- Secondary afferent axons
- Primary afferent axons (correct)
- Interneurons
- Motor axons
Where are the cell bodies of the primary afferent axons located?
Where are the cell bodies of the primary afferent axons located?
- Ventral roots
- Brain stem
- Dorsal roots (correct)
- Spinal cord
What determines the size of primary afferent axons?
What determines the size of primary afferent axons?
- Presence of myelin
- Speed of action potential conduction
- Type of sensory receptor (correct)
- Location in the body
What are the two sets of names used to designate the different sizes of axons?
What are the two sets of names used to designate the different sizes of axons?
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Which type of axons are unmyelinated?
Which type of axons are unmyelinated?
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What is the diameter of the smallest axons, the C fibers?
What is the diameter of the smallest axons, the C fibers?
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What types of sensations do C fibers mediate?
What types of sensations do C fibers mediate?
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What is the speed of action potential conduction along C fibers?
What is the speed of action potential conduction along C fibers?
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What determines the speed of action potential conduction in axons?
What determines the speed of action potential conduction in axons?
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How fast is the conduction of action potentials along C fibers compared to taking a step?
How fast is the conduction of action potentials along C fibers compared to taking a step?
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