Health A-Z

Parasympathetic Nervous System

Clinical Definition The parasympathetic nervous system is a subdivision of the autonomic nervous system. It consists of nerve fibers, which originate in the brain stem. It returns the body to homeostasis. The parasympathetic nervous system promotes slowing of the heart rate, flowing of gastric juices and muscular activity of the alimentary tract. In Our Own

Parkinson’s Disease

Clinical Definition Parkinson’s disease is a progressive motor system disorder. The specific etiology is not known. Symptoms are associated with progressive demise of dopamine producing neurons in the brain. Although it can develop earlier, the onset of the disease is generally after 50 years of age. It is characterized by bradykinesia, postural instability, rigidity and

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