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.
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). A sample of cerebrospinal fluid (CSF) is collected by a health practitioner from the lower back using a procedure called a lumbar puncture or spinal tap. Often, three or more separate tubes of CSF are collected, and multiple tests may be run on the different samples. Purpose Cerebrospinal fluid is a clear liquid produced within spaces in the brain called ventricles. Like saliva it is a filtrate of blood. It is also found inside the subarachnoid space of the meninges which surrounds both the brain and the spinal chord. In addition, a space inside the spinal chord called the central canal also contains cerebrospinal fluid. The subarachanoid space lies between the arachnoid and pia mater. It is filled with cerebrospinal fluid. All blood vessels entering the brain, as well as cranial nerves pass through this space. The term arachnoid refers to the spider web like appearance of the blood vessels within the space. Search Results for 'fluid for the csf is derived from the bloodstream the sites of csf formation are the special tiny capillaries located in the walls of and'. Human Physiology. derived from the Latin word cingulum, which means belt, and refers to the typical location ... a special risk ... that the formation of ... 1900s. Fluid from ... choroid plexus. One of the delicate fringelike processes, consisting almost entirely of blood vessels, which project into each of the four ventricles of the brain which are lined by specialized ependymal cells which secrete cerebrospinal fluid. The largest pair (right and left) of the ventricles of the brain which are irregular with projecting horns which are located in the interior of the cerebral hemispheres; contain a choroid plexus which secretes CSF which circulates through them and passes to the third ventricle. In the superior sagittal sinus, the cerebrospinal fluid is reabsorbed into the blood stream. The cerebrospinal fluid of the neuraxis is regenerated several times every twenty-four hours. Endolymph and perilymph, the fluids of the inner ear, are derived from cerebrospinal fluid. The subarachanoid space lies between the arachnoid and pia mater. It is filled with cerebrospinal fluid. All blood vessels entering the brain, as well as cranial nerves pass through this space. The term arachnoid refers to the spider web like appearance of the blood vessels within the space. (brain) ventricles. The series of four interconnecting cavities of the brain, lined by ependymal cells and with a specialized choroid plexus which produce the cerebrospinal fluid that fills these chambers. The largest pair (right and left) of the ventricles of the brain which are irregular with projecting horns which are located in the interior of the cerebral hemispheres; contain a choroid plexus which secretes CSF which circulates through them and passes to the third ventricle. Choroid Plexus All of the ventricles contain choroid plexuses which produce cerebrospinal fluid by allowing certain components of blood to enter the ventricles. The choroid plexuses are formed by the fusion of the pia mater, the most internal layer of the meninges and the ependyma, the lining of the ventricles. The subarachanoid space lies between the arachnoid and pia mater. It is filled with cerebrospinal fluid. All blood vessels entering the brain, as well as cranial nerves pass through this space. The term arachnoid refers to the spider web like appearance of the blood vessels within the space. Formation: Clinical and experimental observation has established that the cerebrospinal fluid (CSF) is mainly formed by secretion from the choroid plexuses of the cerebral ventricles. Circulation: That formed by the plexuses of the lateral ventricle passes through the interventricular formina into the third ventricle.  The finger-like projections of the arachnoid membrane which project into the cranial venous sinuses within the dura mater along the major fissures of the brain where they are in close proximity to the venous blood and where cerebrospinal fluid can be transferred from the subarachnoid space back into the bloodstream. The largest pair (right and left) of the ventricles of the brain which are irregular with projecting horns which are located in the interior of the cerebral hemispheres; contain a choroid plexus which secretes CSF which circulates through them and passes to the third ventricle. 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. Blood: Blood may be spilled into the CSF by accidental puncture of a leptomeningeal vein during entry of the LP needle. Such blood stains the fluid that is drawn initially and clears gradually. If it does not clear, blood indicates subarachnoid hemorrhage.
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fluid of csf is derived from the bloodstream