ANPS 019 Lecture Notes - Lecture 11: Neuroglia, Olfactory Bulb, Axoplasmic Transport
26 Sep 2018
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Document Summary
The nervous system collects information, integrates, and generates a motor output. Master controlling and communication system of the body. Three general functions of the nervous system: collect information (sensory input) Nervous tissues includes: brain, spinal cord, nerves, ganglia. Primarily support and protect neurons (outnumber neurons ~10:1) However, specific regions display neurogenesis (hippocampus, olfactory bulb) The neuron cell body is the biosynthetic center of the cell. Enclosed by a plasma membrane (perikaryon, cell body, soma) Biosynthetic center of the cell (nucleus & other organelles) Chromatophilic substance (nissl bodies. ) (free & bound ribosomes, dark staining, grey color or grey matter) Dendrites branch off the cell body and receive information from other neurons. Dendritic spine receive input and transfer to the cell body. The axon is a singular process that transmits signals to other neurons. Process emanating from cell body that communicates with other neurons, muscle cells, or glands. Extensive branching called axon collaterals that form axon terminals.
