The Arkansas Railroad Museum preserves the last steam-powered locomotive built in Arkansas and includes various artifacts of Arkansasâs railroad heritage. The Pine Bluff/Jefferson County Historical Museum opened in 1980 in the restored 1907 Union Pacific train depot.
Neuromuscular transmission defects. Only myasthenia gravis will be discussed further. This disease is characterized by abnormal fatigue with exercise. Myasthenia gravis commonly affects young woman and has a predilection for ocular, facial, masticator and proximal upper extremity muscles. Typically the patients recover to some degree after rest.
Terminology [edit]. In the United States the term motor neuron disease is often used interchangeably with amyotrophic lateral sclerosis. The other four motor neuron diseases are: primary lateral sclerosis, progressive muscular atrophy, progressive bulbar palsy and pseudobulbar palsy.n the United States the term motor neuron disease is often used interchangeably with amyotrophic lateral sclerosis.