BIOLOGY 2A03 Lecture Notes - Lecture 6: Tella, Potassium Channel, Afterhyperpolarization
4 May 2017
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Also controls autonomic nervous system, which controls bodily processes (heart rate, organs, etc. ) 7: afferent neurons tend to be pseudo-unipolar, peripheral axon has a cell body close to the cns and a central axon, projecting into the cns, visceral receptors are on organs in the internal environment. 8: cell body tends to be in the cns, innervate skeletal muscles or of the autonomous nervous system. 9: cells in the cns are called interneurons. Interneurons are the intermediate between efferent and afferent neurons. Most neurons in our body are these, bc most neurons are in the cns. 10: glia support the neurons in the cns, oligodendrocytes and schwann cells provide insulation around the axons, they reduce ion leak and thus shield the axon from electrical disruption. 11: in the cns, the oligodendrocytes insulate many axons. 12: cns has white and grey regions (cell body = grey, axons. Electrochemical driving force = chemical(conc gradient) and electrical forces (on charged ions)
