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Psych 626 Week 5- michaila shaak

Psych 626 Week 5- michaila shaak - RUNNING HEAD The Nervous...

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RUNNING HEAD: The Nervous System 1 The Nervous System and Alzheimer’s Disease Michaila Shaak University of Phoenix Professor Stephanie Isgitt 2/23/2015
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The Nervous System 2 The Nervous System and Alzheimer’s Disease Every interaction in our daily live consists of our bodies processing and reacting to some type of stimuli. While the majority of these responses help us to understand our environment and identify potential dangers, some are literally life sustaining. The biological system that is responsible for receiving sensory input, interpreting its meanings and sending appropriate motor output, is the nervous system (Straub, 2012). The human nervous system can be broken down into two main sections with specialized responsibilities, the Central Nervous System (CNS) and the Peripheral Nervous System (PNS). The Central Nervous System is comprised of the brain and the spinal cord and, in a healthy individual, the CNS with receive sensory input from all the parts of the body for interpretation (Straub, 2012). Messages are then sent from the brain and spinal cord in response to sensory input, controlling reactions and movements of the body (Straub, 2012). A healthy CNS will receive sensory input completely and without interruption. Additionally, the information will be processed thoroughly and a proper response will be ordered, sent and executed. The Peripheral Nervous System consists of the remaining nerves of the body and is further divided into the Somatic Nervous System (SNS) and the Autonomic Nervous System (ANS). A healthy SNS is comprised of nerves that carry messages from sensory organs, such as the eyes, ears and nose, to the CNS and then carries messages from the CNS to the voluntary skeletal muscles and glands of the body for them to respond properly to the original sensory message (Straub, 2012). For example, when functioning properly, if an individual puts their hand on a hot surface; the message of pain and heat will be carried to the CNS to be interpreted. The
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