BIOL273 Lecture Notes - Lecture 2: Central Nervous System, Peripheral Nervous System, Motor Neuron

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20 Apr 2017
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Neurophysiology: function of the nervous system, the nervous system is one of two key control structures in the human body, nervous system, receives information, using sensory neurons (receptors) to receive from external environment. Cns: receptors, peripheral nerves, ganglia (clusters of cell bodies, central nervous system (cns, brain, spinal cord. Long cytoplasmic extensions transmit information to cells (interneurons) within the cns: form synapses with neurons. Located inside the cns: transmit information signals within the cns, either laterally within the spinal cord or vertically to the brain. Inside of the cell is negative (usually between -70 to -90 mv for neurons: result of relative concentration of charged ions (both in/outside of cell, excess negative charge inside the cell (presence of ions, therefore. Ions with positive equilibrium move into resting cell. Ions with negative will tend to move out of cell: charge difference between inside and outside of a cell at rest is resting.

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