CSF is produced in the ventricles and circulates through the ventricles and
around the brain and spinal cord.
Circulation of the cerebrospinal fluid • Figure 7.9
a.
View
of the ventricles (through
a
transparent
brain)
POSTERIOR
CSF is made in choroid
plexuses of lateral, third
and fourth ventricles by
moving fluid from blood
capillaries through tight
junctions of ependymal
cell layers
(blood-brain barrier).
FOURTH VENTRICLE
CENTRAL CANAL OF SPINAL CORD
ANTERIOR
LATERAL VENTRICLES
THIRD VENTRICLE
Right lateral view of brain
b. Flow of CSF through the
brain
and spinal cord
POSTERIOR
ANTERIOR
Lateral ventricle
Third ventricle
Fourth ventricle
Central canal of spinal cord
and subarachnoid space
around brain and spinal cord
Arachnoid villi, which
reabsorb CSF back into
venous blood
Venous blood
Sagittal section of brain and spinal cord
201
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