Damage in brain degeneration essay
The human brain is perhaps the most complex of all biological systems, with the adult brain consisting of several billion information-processing cells called neurons. 1 The brain is a: The glial scar contains the proliferation of neurotoxic molecules and prevents the spread of neuronal damage and degeneration. The glial scar is thus essential for preventing additional cell degeneration in the acute phase of the injury. Rolls et al. 2009. Astrocytes are known to provide neurontrophic support. The degeneration of axons after a transection injury is now known as Wallerian degeneration WD. Waller's work was extended by Santiago Ram ny Cajal, who described in detail the morphological stages of WD, from monitor-like fragmentation of the axon and the granular disintegration of the neurofibrils to the final resorption of the axon; Aphasia is an impairment in the comprehension or formulation of language caused by damage to the cortical center for language. It can be caused by many different brain diseases and disorders, but stroke from a cerebrovascular accident is the most common reason for someone to develop aphasia. The symptoms of aphasia can range from: 1. Introduction: The ongoing challenge of neurodegenerative diseases. Neurodegenerative diseases are conditions that lead to progressive damage to nerve cells, mainly in the brain, and include Alzheimer's disease AD, Parkinson's disease, dementia with Lewy bodies, vascular dementia, Huntington's disease, frontotemporal,