These movements are not operated under conscious control, meaning a person does not have to think about them in order for them to happen.

This pathway in the body begins with a sensory neuron and ends with a motor neuron.

This part of the brain is responsible for maintaining involuntary movement.

This covering insulates a neuron so that an electrical impulse can pass. If damaged, an organism can experience muscle weakness, uncontrollable muscle movements, or even paralysis.

These bones protect the very delicate nerve fibers of the spinal cord.

When the brain is sending a signal to the quadriceps (muscles in the legs used for walking), the message will pass from the spinal cord to the ................ before reaching a muscle and activating it.

This are of the brain controls voluntary movement.

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Multiple Sclerosis (MS) is a disease in which the myelin that covers the axon of a motor neuron breaks down, leading to an inability of the brain to send messages to the muscles.

People with motor system disease or injuries lack the ability to think and process information.

Injuries to the spinal cord often result in paralysis, loss of the ability to move.

Currently, there are no known cures for diseases or injuries affecting the motor system because the body cannot replace damaged neurons like it can other cells.