A watery fluid that circulates through the brain’s ventricles and around the surface of the brain and spinal cord.
Cerebrospinal fluid (CSF) is a clear, watery liquid that flows around the brain and spinal cord, surrounding and protecting them. A CSF analysis is a group of tests that evaluate substances in CSF in order to diagnose conditions affecting the brain and spinal cord (central nervous system).  Cerebrospinal fluid: A watery fluid that is continuously produced and absorbed and that flows in the ventricles within the brain and around the surface of the brain and spinal cord. Abbreviated CSF.  THE NORMAL CSF. 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 Ventricles CSF is produced mainly by a structure called the choroid plexus in the lateral, third and fourth ventricles. CSF flows from the lateral ventricle to the third ventricle through the interventricular foramen (also called the foramen of Monro).  Cerebrospinal fluid is produced by the choroid plexus in the ventricles of the brain and contained by the dura and arachnoid layers of the meninges. The brain floats in CSF, which also transports nutrients to the brain and spinal cord. As holes form in the spinal dura mater, CSF leaks out into the surrounding space. Spontaneous cerebrospinal fluid leak syndrome (SCSFLS) is a medical condition in which the cerebrospinal fluid (CSF) held in and around a human brain and spinal cord leaks out of the surrounding protective sac, the dura, for no apparent reason. Cerebrospinal Fluid. Sections. Cerebrospinal fluid (CSF) is a clear liquid that surrounds the brain and spinal cord. It helps cushion the brain, transports nutrients and waste products and controls the chemical environment of the central nervous system Cerebrospinal fluid (CSF) is a clear, colorless body fluid found in the brain and spine. It is produced in the choroid plexuses of the ventricles of the brain.  Cerebrospinal fluid (CSF) is a watery fluid that circulates through the brain’s ventricles (cavities or hollow spaces) and around the surface of the brain and spinal cord. A CSF leak is a condition that occurs when the CSF leaks through a defect in the dura or the skull and out through the nose or ear.  Cerebrospinal fluid flows in and around the hollow spaces of the brain and spinal cord, and between two of the meninges (the thin layers of tissue that cover and protect the brain and spinal cord). Cerebrospinal fluid is made by tissue called the choroid plexus in the ventricles (hollow spaces) in the brain. 
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what is cerebrospinal fluid