Excitatory Synapses On A Dendrite #2
by Dennis Kunkel Microscopy/science Photo Library
Title
Excitatory Synapses On A Dendrite #2
Artist
Dennis Kunkel Microscopy/science Photo Library
Medium
Photograph - Photograph
Description
Excitatory (asymmetric) synapses on a neuron dendrite (mammal central nervous system), coloured transmission electron micrograph (TEM). Two axon terminals (dark yellow) form excitatory synapses on a dendrite (green). Chemical synapses are specialized junctions through which nerve cells signal one another or other non-neuronal cells such as muscles. At a typical synapse an axon and a dendrite flank each other across a slender gap (synaptic cleft; purple and pink). Signalling molecules, known as neurotransmitters, are contained in tiny vesicles of the axon (light yellow). Neurotransmitters pass rapidly from axon to dendrite triggering an electrical impulse. Magnification: x16,245 when shortest axis printed at 25 millimetres.
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September 27th, 2018
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