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51.1 MB (51.0 MB compressed)
5091 x 3509 pixels
43.2 x 29.7 cm ⏐ 17.0 x 11.7 in (300dpi)
FRANCIS LEROY, BIOCOSMOS / SCIENCE PHOTO LIBRARY FRANCIS LEROY, BIOCOSMOS / SCIENCE PHOTO LIBRARY
Nerve cell and axon. Diagram showing how the input to a nerve cell (neuron) through dendrites (shown by arrows at upper left) is transmitted (yellow arrow) along the nerve cell's axon (across bottom) to the axon terminal (upper right). At lower centre, part of the axon has been illustrated in cutaway form to show the internal structure of the individual sections, including the myelin sheath. The myelin sheath is brown in the main artwork and red in the cutaway section. These sections are joined at junctions called nodes of Ranvier. Also shown is the nucleus of a Schwann cell (bump on cutaway section at left).
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