Nolte – Chapter 5 (Ventricles and Cerebrospinal Fluid) and all Class-Notes and Lab-Notes tagged with Chapter 5
|Nolte – Chapter 5 (Ventricles and Cerebrospinal Fluid) and all Class-Notes and Lab-Notes tagged with Chapter 5.
Ventricles are lined with ependymal cells
There are Four Ventricles
anterior horn, body, atrium(where they meet), posterior horn(occipital), and inferior horn(through temporal)
Caudate head follows the anterior horn and its tail lies in the roof of the inferior horn.
the thalamus forms the body of the ventricle
Corpus Collosum is the roof of the anterior horn and body
genu at the anterior horn.
hippocampus forms the floor of the medial wall of the inferior horn.
foramin of Monro (interventricular formaen) in the anterior horn to connect to…
in the mideline region of the diencephalon
there is a hole where there is the interthalamic adhesion.
ends at the lamina terminalis(rostral end of the neural tube)
medial thalamus and hypothalamus for the medial wall.
there are four protrustions (recesses)
optic recess in front of the optic chiasm
infundibular recess behind the chiasm
pineal recess that invades the stalk of the pineal
suprapineal which lies anterior to that stalk
cerebral aqueduct(Sylvius) to…
sandwiched between cerebellum and the pons/rostral medulla
its floor is the rhomboid fossa where the ending becomes a lateral recess
empties into subarachnoid space by three aperatures
hole in the inferior medullary velum that has an attachment of the medullary to the vermis of the cerebellum
thus it joins the cisterna magna
lateral aperatures (luschka)
secretes most of the CSF
which is clear and similar to plasma
containes higher conentrations of magnesium and chloride and less potassium and calcium
can be depressed by metabolic inhibitors.
formed by filtration of blood through choroidal capillaries and the active transport of substances.
a route for the spread of neuroactive hormones
regulation of extracllular environment
sink for substances produced by the brain
made up of ependymal cells that overlay the pia in all regions, but where the pia-ependyma complex invaginates is where we see choroid epithelium.
the ependymal-pia-capillary complex is known as the choroid plexus.
in the lateral ventricle its in the inferior horn and atrium(glomus) and goes down the interventricular foramen.
is on the roof of the third ventricle
in the fourth ventricle it is formed by an invagination of the inferior medullary velum and actually gets exposed to the subarachnoid space.
ependymal is cells of the pia
epithelium is a specialized later of the ependymal layer
It’s a 3-layers membrane between blood and CSF
first is endothelilal wall of each choroidal capillary
second is scattered pial cells and collagen
third is choroid epithelium
Sympathetic stimulation can cause a 30% reduction in CSF production.
Interentricular formania (Monroe)
Luksha(lateral aperature) and Magendie(medial)
Cisterna Magna/Pontine Cistern
Tentorial Notch passage
Superior Sagittal Sinus
returned to the venous system through arachnoid villi that penetrate the dural sleeves
excess production, blockage or deficiency of reabsorption of CSF
tumors of the chloroid plexus (papillomas)
whether lateral ventricles are able to reach subarachnoid
blocking ov villi or tentorial notch would still be communicating.
The straight sinus is situated within the dura mater, where the falx cerebri meets the midline of tentorium cerebelli.
The database is protected by copyright ©dentisty.org 2016