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Neuro Block I

UTSW Neuro Block I

QuestionAnswer
Why do neurons use electrical signaling for transmission? speed of transmission over distance (also: info preservation, metabolic efficiency, dynamic modulation)
How long does it take a small particle to diffuse across a plasma membrane (10 nm)? 0.025 microsec
How long does it take a small particle to diffuse across a synaptic cleft (100 nm)? 2.5 microsec
How long does it take a small particle to diffuse across a soma diameter of a small neuron (10 micrometer)? 25 msec
How long does it take a small particle to diffuse across a local cortical axon projection (1 mm)? 250 sec
How long does it take a small particle to diffuse across a spinal neuron axon to toe (1 m)? 7.9 years
Created by: UTSW1