01:119:116 Lecture Notes - Lecture 22: Neurotransmission, Neuromuscular Junction, Ion Channel
11 Mar 2016
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Document Summary
Two types of cells: neuron unique properties, glia 10x as many glia support role for microenvironment for neurons to function in. We live longer today than we did earlier we lose more neurons today; thus, we experience more diseases with our nervous system. Neurons are the basic physiology of the nervous system. Need two neurons to communicate between the brain and the spine. Parts of a neuron: soma (cell body) has everything a normal cell would have (mitochondria, etc. , axon, dendrites. Hillock down the axon axon terminal. In a neuron, its general process is information. Biological level that represents information with an electrical signal = action potential. Action potential can only occur in axons, starts in hillock. Electrical signal is transduced (changes form) to chemical signal. Starts from one point and travels away from cell body towards synapse. Only axon is what generates the electrical signal.
