The Nervous System M4 Case

The Nervous System M4 Case - Disorders of the Nervous...

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Disorders of the Nervous System The body is regulated by the nervous system and the endocrine system. The basic units of the nervous system are neurons which transmit signals throughout the body. The nervous system has two major divisions: a) Central nervous system (CNS) b) Peripheral nervous system (PNS) Various disorders occur as a result of damage to the nervous system and these are tumors, structural defects, infections, trauma, blood flow disruption and degeneration (Overview of nervous system disorders). The CNS consists of two parts: the brain and the spinal cord. The brain which is the center of all neural networks is divided into 3 parts – the forebrain, the mid-brain and the hind brain. The forebrain in turn, consists of the cerebral hemispheres, thalamus, hypothalamus, posterior pituitary and lateral geniculate nucleus (LGN). Each pair of cerebral hemispheres are further divided into 4 lobes: frontal, parietal, temporal and occipital lobes (Kimball, 2008). Disruption of higher mental processes is caused by lesions in particular areas of the cerebral hemispheres and symptoms vary according to the location of these lesions. In particular, the affect of injury in the
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The Nervous System M4 Case - Disorders of the Nervous...

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