PSYCH261 Chapter Notes - Chapter 2: Endoplasmic Reticulum, Myelin, Schwann Cell
20 Nov 2012
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Chapter 2: structure and functions of cells of the nervous system. Information, in the form of light, sound waves, odours, tastes, or contact with objects is gathered from the environment by sensory neurons. Movements are accomplished by the contraction of muscles, which are controlled by motor neurons. Interneurons: neurons that lie entirely within the central nervous system. Local interneurons: form circuits with nearby neurons and analyze small pieces of information: relay interneurons: connect circuits of local interneurons in one region of the brain with those in other regions. Central nervous system (cns): brain and spinal column. Peripheral nervous system (pns): part of the nervous system outside the brain the spinal cord. Soma: contains the nucleus and much of the machinery that provides for the life processes of the cell. Dendrites: receives information from terminal buttons of other neurons: synapse is the space between two neurons.
