BIOL 1002 Chapter : Chapter 38 The Nervous System

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15 Mar 2019
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Makes it possible for us to perceive our world, evaluate our perceptions and respond accordingly. A neuron must perform four functions and these are localized in separate parts of the cell: receive information-dendrites, process the information and produce electrical signals-cell body, conduct electricity signals-axon (brain/spinal cord, transmit information-synaptic terminal. The cell body processes signals from the dendrites. Electrical signals travel to neuron"s cell body, which, performing the process information function integrates incoming information. If incoming signals are positive enough, a large, rapid electrical signal called an action potential is produced. The axon conducts action potentials along long distances. In a typical neuron, a long, thin strand called an axon conducts action potentials from the cell body to synaptic terminals at the axon"s end. Single axons may stretch from our spinal cord to our toes, a distance of about 3 ft. Axons are typically bundled together into nerves, much like wires are bundled within an electrical cable.

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