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The cerebrospinal fluid (CSF) is produced from arterial blood by the choroid plexuses of the lateral and fourth ventricles by a combined process of diffusion, pinocytosis and active transfer. A small amount is also produced by ependymal cells. The choroid plexus consists of tufts of capillaries with thin fenestrated endothelial cells. These are covered by modified ependymal cells with bulbous microvilli.
ependymal
CSF is mainly produced by a structure in the brain called the choroid plexus. It flows through the third and fourth ventricles into the subarachnoid space and then gets absorbed into the blood stream. CSF plays several key roles including protecting the brain from injury, removing waste products from the brain, and transports hormones between various areas of the brain.
It is formed by filtration of blood through the fenestrations of the choroidal capillaries in the choroid plexus. It is flows by the active transport of substances (Particularly sodium ions) across the choroid epithelium into the ventricle, water then flows passively across to maintain osmotic balance. It has also been shown that if the choroid plexus was removed the ventricles still produced substantial quantities of CSF, though less than normal. And is generally considered to be fluid movement from CNS capillaries into the parenchyma of the brain, and from there across the ependymal lining into the ventricle.
Lumbar
Choroid Plexuses
choroid plexuses
Choroid Plexuses
Most of the CSF is formed by the choroid plexuses in the ventricles of the brain. Some is also produced by ependymal cells.
Well, the theory right now is the majority of CFS is produced within the ventricles the choroid plexus produces by a combined process of diffusion, pinocytosis and active transfer of arterial blood and the rest is produced by modified ependymal cells of the choroid plexus.
The cerebrospinal fluid (CSF) is produced from arterial blood by the choroid plexuses of the lateral and fourth ventricles by a combined process of diffusion, pinocytosis and active transfer. A small amount is also produced by ependymal cells. The choroid plexus consists of tufts of capillaries with thin fenestrated endothelial cells. These are covered by modified ependymal cells with bulbous microvilli.
the major part of the CSF is produced in the brain by the ependymal cells in the choroid plexus. the rest is formed around blood vessels and along ventricular walls.
A plexus is a branching network of axons outside of the central nervous system. The four primary nerve plexuses are the cervical plexus, brachial plexus, lumbar plexus, and the sacral plexus. The choroid plexus is a part of central nervous system in the brain and it consist of capillaries, ventricles and ependymal cells. source of this information : Wikipedia.
ependymal
Choroid is found in the ventricles(lateral, third and fourth) and it is also found leading from the lateral to the thrid ventricles going through the interventricular foramen.
CSF is mainly produced by a structure in the brain called the choroid plexus. It flows through the third and fourth ventricles into the subarachnoid space and then gets absorbed into the blood stream. CSF plays several key roles including protecting the brain from injury, removing waste products from the brain, and transports hormones between various areas of the brain.
Choroid plexus is the tissue in the brain responsible for making cerebrospinal fluid (CSF). There are several areas of the brain that contain choroid plexus; all of these areas belong to a part of the brain called the ventricular system, which is where the CSF flows. The only part of the ventricular system that does not contain choroid plexus is the cerebral aqueduct, which connects the third ventricle to the fourth ventricle. Cells that make up the choroid plexus are specialized cells that line the ventricular system. In all other parts of the ventricles, these lining cells are called ependymal cells. These cells in the choroid plexus are highly specialized for making CSF by filtering the blood. To accomplish the task of generating sufficient CSF, choroid plexus tissue receives a large blood supply relative to its size.