BPK 205 Chapter Notes - Chapter 9: Basal Ganglia, Peripheral Nervous System, Posterior Column
14 Oct 2011
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Draw and label gross structure of the central nervous system. [10 minutes: draw and label the three separate sections of the spinal grey matter and spinal white matter. Name the neurons whose cell bodies lie in the dorsal columns. White matter consists of axons carrying messages either from spinal cord to higher centres (ascending tracts) or from higher centres to the spinal cord (descending tracts). Grey matter consists of cell bodies of neurons, synapses, and short axons. White matter is on the outside enclosing the spinal cord, so it looks white. Neurons whose cell bodies lie in the dorsal columns are: neurons that receive action potentials from the peripheral nervous system. Pons: some neurons for respiration, relay station for pathways between cortex and cerebellum. Midbrain/mesencephalon: networks for eye movements and hearing. Basal ganglia is in the white matter of the cerebral cortex on both sides of the thalamus.
