an accumulation of csf which exerts pressure is known as _____________________.
As the name implies, it is a condition in which the primary characteristic is excessive accumulation of fluid in the brain. Although hydrocephalus was once known as water on the brain, the water is actually cerebrospinal fluid (CSF) — a clear fluid that surrounds the brain and spinal cord. The excessive accumulation of CSF results in an abnormal widening of spaces in the brain called ventricles. The CSF occupies the subarachnoid space (between the arachnoid mater and the pia mater) and the ventricular system around and inside the brain and spinal cord. It constitutes the content of the ventricles, cisterns, and sulci of the brain, as well as the central canal of the spinal cord. A spinal needle will be inserted. Once the needle is in position, the CSF pressure is measured and a sample of 1 to 10 mL of CSF is collected. The needle is removed, the area is cleaned, and a bandage is placed over the needle site. You may be asked to remain lying down for a short time after the test. The term hydrocephalus is a neurological condition, where there is an accumulation of cerebrospinal fluid (CSF) in the brain. The cerebrospinal fluid fills the cavities (ventricles) of the brain and the spinal cord. Increase in the cerebrospinal fluid widens the ventricular spaces in the brain and exerts pressure on the brain tissues. Hydrocephalus is an abnormal accumulation of cerebrospinal fluid (CSF) in the ventricles of the brain and can be caused by an impaired flow of cerebrospinal fluid, reabsorption, or excessive production of CSF. Hydrocephalus may cause increased intracranial pressure inside the skull. Normal CSF contains 0-5 mononuclear cells. The CSF pressure, measured at lumbar puncture (LP), is 100-180 mm of H2O (8-15 mm Hg) with the patient lying on the side and 200-300 mm with the patient sitting up. The balance between production and absorption of CSF is critically important. Because CSF is made continuously, medical conditions that block its normal flow or absorption will result in an over-accumulation of CSF. The resulting pressure of the fluid against brain tissue is what causes hydrocephalus. Cerebrospinal fluid (CSF) collection is a test to look at the fluid that surrounds the brain and spinal cord. CSF acts as a cushion, protecting the brain and spine from injury. The fluid is normally clear. It has the same consistency as water. The test is also used to measure pressure in the spinal fluid. The total volume of CSF in the adult ranges from140 to 270 ml. The volume of the ventricles is about 25 ml. CSF is produced at a rate of 0.2 - 0.7 ml per minute or 600-700 ml per day. The circulation of CSF is aided by the pulsations of the choroid plexus and by the motion of the cilia of ependymal cells. Cerebrospinal fluid (CSF) is a clear, colorless body fluid found in the brain and spinal cord. It is produced in the choroid plexuses of the ventricles of the brain. It acts as a cushion or buffer for the brain, providing basic mechanical and immunological protection to the brain inside the skull.
An accumulation of csf which exerts pressure is known as hydrocephalus.