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Pathophysiology of Myelinated vs Unmyelinated Nerve Fibers

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Pathophysiology of Myelinated vs Unmyelinated Nerve Fibers

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Questions and Answers

What is the process of action potential conduction in myelinated nerve fibers known as?

Saltatory conduction (correct)

Continuous conduction

Rapid conduction

Dissipated conduction

What happens to action potential conduction in myelinated fibers when the myelin sheath is disrupted?

Conduction stops completely

Conduction becomes slower (correct)

Conduction remains unaffected

Conduction becomes faster

What is a consequence of slowed conduction in demyelinated nerve fibers?

Increased coordination

Enhanced signal transmission

Weakness and sensory deficits (correct)

Reduction in fatigue vulnerability

How does action potential travel in unmyelinated nerve fibers?

Continuously along the entire length of the axon Signup and view all the answers

What type of damage can impair action potential conduction in unmyelinated fibers?

Axonal damage Signup and view all the answers

What effect does axonal damage have on unmyelinated nerve fibers?

Compromises signal transmission effectiveness Signup and view all the answers

What symptoms can impaired conduction in unmyelinated fibers result in?

Numbness, tingling, and pain Signup and view all the answers

What may axonal damage lead to?

A loss of sensory or motor function Signup and view all the answers

What are the general implications for the nervous system due to impaired conduction?

Failure of signal transmission between neurons Signup and view all the answers

What can disruptions in action potential conduction lead to?

Motor dysfunction, sensory deficits, and other neurological symptoms Signup and view all the answers

What is neuropathic pain characterized by?

Abnormal sensations and pain signals Signup and view all the answers

What may loss of function be depending on?

The location and extent of impairment Signup and view all the answers