PSYC 362 Chapter Notes - Chapter 2: Axon Terminal, Neuroglia, Schwann Cell
14 Aug 2016
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Chapter 2: structure and functions of cells of the nervous system. Neurons: sensory neurons gathers information from the environment in the form of light, sound waves, odors, tastes, or contact with objects, motor neurons controls contraction of muscles which allows for movement. Interneurons neurons that lie entirely within the nervous system. There are about 100 billion neurons in the human ns. Nervous system: central ns consists of the brain and the spinal cord, peripheral ns consists of everything else; nerves and most of the sensory organs. The basic message it carries is called an action potential. Axoplasmic transport an active process that propels substances from one end of the axon to the other: mitochondria breaks down nutrients i. e. , glucose and provide the cell with energy to perform its functions. Important difference between the two cells: the chemical composition of the myelin protein they produce are different.
