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Images Dated 8th June 1989

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False-colour SEM of 3 neurones of cerebral cortex Featured 8 Jun 1989 Image

False-colour SEM of 3 neurones of cerebral cortex

False-colour scanning electron micrograph (SEM) showing three neurones (nerve cells) of the human cerebral cortex - the outer grey matter of the brain. Neurones exist in varying sizes & shapes throughout the nervous system. A basic neurone consists of a cell body with processes of two types: a single axon (the output, effector nerve fibre) and one or more dendrites, smaller, input processes that serve as sensory receptors. In the cerebral cortex, neurones of comparable structure are arranged in a variable number of distinct layers. Magnification: x3,600 at 6x7cm size, x1,600 at 35mm size