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.
myasthenia gravis. An autoimmune disease affecting neuromuscular junctions characterized by muscle weakness and fatigability. It is due to a destruction of acetylcholine receptors in the postsynaptic membrane of the neuromuscular junction.
Parkinson disease. The pathophysiology of bowel dysfunction in PD is characterized by dystonia of striated muscles of the pelvic floor and external anal sphincter. Colonic transit time is prolonged as a consequence of loss of dopamine within the CNS and enteric nervous system.arkinson disease. The pathophysiology of bowel dysfunction in PD is characterized by dystonia of striated muscles of the pelvic floor and external anal sphincter. Colonic transit time is prolonged as a consequence of loss of dopamine within the CNS and enteric nervous system.