Soul

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Soul: = Psyche (has nothing to do with the immortal Spirit as is commonly thought) its the Material part of the human body. Consisting of the Nervous systems and Nerve centres.

Its an otherwise obsolete and outdated word (which means a variety of things unrelated to the Psyche) as the word Psyche mostly means the same thing, while retaining the definition and clarity in the meaning of the word.


Neuroscience is the field of science that focuses on the study of the nervous system.[1]


It consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS contains The Human Brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibres or axons, that connect the CNS to every other part of the body. The PNS includes motor neurons, mediating voluntary movement; the autonomic nervous system, comprising the sympathetic nervous system and the parasympathetic nervous system, which regulate involuntary functions, and the enteric nervous system, which functions to control the gastrointestinal system.


At the cellular level, the nervous system is defined by the presence of a special type of cell, called the neuron, also known as a "nerve cell". Neurons have special structures that allow them to send signals rapidly and precisely to other cells. They send these signals in the form of electrochemical waves travelling along thin fibres called axons, which cause chemicals called neurotransmitters to be released at junctions called synapses. A cell that receives a synaptic signal from a neuron may be excited, inhibited, or otherwise modulated. The connections between neurons can form neural circuits and also neural networks that generate an organism's perception of the world and determine its behaviour. Along with neurons, the nervous system contains other specialized cells called glial cells (or simply glia), which provide structural and metabolic support.


Nervous systems are found in most multicellular animals, but vary greatly in complexity. The only multicellular animals that have no nervous system at all are sponges, placozoans and mesozoans, which have very simple body plans. The nervous systems of the radially symmetric organisms the ctenophores (comb jellies) and cnidarians (which include anemones, hydras, corals and jellyfish) consist of a diffuse nerve net. All other animal species, with the exception of a few types of worm, have a nervous system containing a brain, a central cord (or two cords running in parallel), and nerves radiating from the brain and central cord. The size of the nervous system ranges from a few hundred cells in the simplest worms, to around 100 billion cells in humans.


The central nervous system functions to send signals from one cell to others, or from one part of the body to others and to receive feedback. Malfunction of the nervous system can occur as a result of genetic defects, physical damage due to trauma or toxicity, infection or simply of ageing. The medical speciality of neurology studies disorders of the nervous system and looks for interventions that can prevent or treat them. In the peripheral nervous system, the most common problem is the failure of nerve conduction, which can be due to different causes including diabetic neuropathology and demyelinating disorders such as multiple sclerosis and amyotrophic lateral sclerosis.


Further Reading

How to read the teaching


References