Biology, 13.07.2019 13:00 zaratayyibah
In the human nervous system, signals are transmitted along neurons as "action potentials" that travel at speeds of up to 100 m/s. (an action potential is a traveling influx of sodium ions through the membrane of a neuron.) the signal is passed from one neuron to another by the release of neurotransmitters in the synapse. suppose someone steps on your toe. the pain signal travels along a 1.2 m long sensory neuron to the spinal column, across a synapse to a second 1.2 m long neuron, and across a second synapse to the brain. suppose that the synapses are each 109 nm wide; that it takes 0.10 ms for the signal to cross each synapse; and that the action potentials travel at 92 m/s.
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In the human nervous system, signals are transmitted along neurons as "action potentials" that trave...
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