Quick question on the process of movement    Multiple sclerosis is a disease in which the peripheral neurons lose their myelin sheath. In this disease, voluntary movement of the limbs is slowed because;  Pick the ones that are true  the rate of opening of ligand-gated Na+ channels is decreased.   the generation of the action potential is blocked at points along the unmyelinated region due to the absence of voltage-gated channels   the action potential amplitude is degraded at the Nodes of Ranvier of the peripheral neuron.   The Schwann cells are targeted and destroyed by the immune system, affecting saltatory propagation.   the rate of opening of ligand-gated Na+ channels is decreased.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Quick question on the process of movement 

 

Multiple sclerosis is a disease in which the peripheral neurons lose their myelin sheath. In this disease, voluntary movement of the limbs is slowed because; 

Pick the ones that are true 

the rate of opening of ligand-gated Na+ channels is decreased.
 
the generation of the action potential is blocked at points along the unmyelinated region due to the absence of voltage-gated channels
 
the action potential amplitude is degraded at the Nodes of Ranvier of the peripheral neuron.
 
The Schwann cells are targeted and destroyed by the immune system, affecting saltatory propagation.
 
the rate of opening of ligand-gated Na+ channels is decreased.
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