BIO210Y5 Chapter Notes - Chapter 2: Peripheral Nervous System, Neuroglia, Central Nervous System
Document Summary
Central nervous system (csn): brain and spinal cord. Peripheral nervous system (psn): neural tissue outside cns. Signal transduction: receptors (visceral/internal reference or somatic/external reference) sensory psn within afferent division information processing in brain motor psn within efferent division somatic. Unipolar: initial segment at dendrites, sensory neurons of pns. Multipolar: most common in cns, motor neurons. Neuroglia of cns neuroglia (cells within white and gray matter) By action of active channels (in addition to active of passive k+ and na+ leak channels and active na+/k+ pump)