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I and II (lateral ventricles)
located in the cerebral hemispheres
III (third ventricle)
midline structure in the diencephalon
IV (fourth ventricle)
bounded by the pons, medulla oblongata and cerebellum
Cerebral aqueduct
connects the third ventricle to the fourth ventricle and is located in the midbrain
opening from the lateral ventricles to the third ventricle is called the interventricular foramen
choroid plexus
capillary-like structures that continually produce cerebrospinal fluid (CSF)
where CSF is made
CSF
to serve as a shock absorber, help transport nutrients to cells and to remove products and help maintain the ion balance within the nerve tissue.
meningeal
brain surrounded by three _ layers but modified somewhat from the make-up of the spinal cord.
modifications are related to venous drainage of the brain and resorption of CSF
dura mater
in the brain has two layered sheets of fibrous connective tissue
tough fibrous outermost layer of connective tissue, two layers of dura that separate to form dural venous sinuses
superficial periostal layer
attaches to internal surface of the skull bone
deeper meningeal layer
form the true external covering of the brain and is continuous with dura mater of the spinal cord
dural sinuses
wo layers of brain dura are fused together, except when they separate to enclosed a blood-filled _
sinuses collect the blood to be drained from the brain
superior sagittal sinus
largest dural venous sinus
on the superior aspect of the brain receives most of the CSF
arachnoid mater
delicate web-like meningeal layer underlies the dura mater
pia mater
delicate vascular membrane adheres to the surface of brain and spinal cord
arachnoid granulations
on superior part of the brain, the arachnoid mater forms knoblike granulations called _
CSF is returned to the general venous system through _ projecting into the dural venous sinuses
sub-arachnoid
space deep to the arachnoid mater is called the _ space and contains the cerebrospinal fluid (CSF)
cerebrospinal fluid
surrounds the brain and spinal cord providing nourishment and protection to the central nervous system (CNS)