the myelin sheaths. The disease is classified as demyelinating , which is also known as the degeneration of the myelin structures in the neuron.
PLS affects a part of the neuron called the cell body (or soma). Specifically, it is the cell bodies of upper motor neurons that are affected.
The Synaptic knob
This is what happens:a receptor detects a stimulus (change in the environment)a sensory neuron sends a signal to the relay neuronthe relay neuron sends the signal to the motor neuronthe motor neuron sends a signal to the affected partthe affected part produces a response
The symptoms of the disorder become progressively worse, with muscles typically affected in the following order: legs and feet, main part of the body (the trunk), arms and hands, and face.
dendrites. Dendrites are specialized structures on a neuron that receive signals from other neurons and transmit them towards the cell body. They play a crucial role in integrating information from multiple sources to determine the neuron's response.
Schwann cells are cells that are part of the nervous system, which warps around a nerve fiber and forms the nerve-insulating layer. Schwann cells are not affected greatly in multiple sclerosis, as MS is an autoimmune disease of the CENTRAL nervous system, and Schwann cells are only present in the PERIPHERAL nervous system. In the CNS, oligodendrocytes are responsible for insulating the axons with myelin, but are hardly affected in MS, as MS causes destruction of myelin, not the myelinating agents.
The axon, an elongated portion of the neuron, carries impulses to the muscles.
Motor Neuron
The axon is the part of the neuron that can carry information for long distances.
Soma
Sensory neuron and motor neuron.
synapse