Respuesta :
An action potential can therefore only happen at the nodes in ALS. Action potential can travel along the neuron more quickly than it might in unmyelinated neurons.
By raising membrane-muscle resistance and decreasing membrane-muscle capacitance, the myelin coating accelerates conduction. The motor neurons steadily degrade and eventually die as a result of ALS. The brain, spinal cord, and all the muscles in the body are connected by motor neurons. Motor neurons that have suffered damage stop communicating with the muscles, which prevents the muscles from working.
The neurodegenerative disease Amyotrophic Lateral Sclerosis (ALS), also known as Motor Neuron Disease (MND) or Lou Gehrig's disease, causes the gradual loss of motor neurons that regulate voluntary muscles. Limb-onset In contrast to bulbar-onset ALS, which starts with trouble speaking or swallowing, ALS first manifests as weakness in the arms or legs. 15% of those with ALS go on to acquire frontotemporal dementia, and 50% of those with ALS experience at least mild cognitive and behavioural impairments. The majority of people feel pain. The afflicted muscles are used for speech, walking, and chewing food. The loss of motor neurons continues until the ability to move, speak, eat, and finally breathe is lost. When ALS progresses, paralysis and an early death typically from respiratory failure occur.
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