STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Foetal brain tissue. Coloured scanning electron micrograph (SEM) of a section through the corpus striatum of a foetal brain. The corpus striatum is filled with neurons (nerve cells), which are responsible for passing information around the central nervous system (CNS). Each neuron consists of a cell body (round) surrounded by many extensions called dendrites. Dendrites collect information from other neurons or from sensory cells. Each neuron also has one process called an axon, which passes information to other neurons. The corpus striatum, which forms part of the basal ganglia deep in the cerebral hemispheres, is involved in the control of posture and movement.
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