Installing a standard ball trailer hitch on a tow vehicle can cost $200-$500 or more. A spare tire typically costs $20-$200 or more, depending on size and type, a bolt-on spare tire carrier adds $15-$100 or more.
Hydrocephalus is the buildup of fluid in the cavities (ventricles) deep within the brain. The excess fluid increases the size of the ventricles and puts pressure on the brain. Cerebrospinal fluid normally flows through the ventricles and bathes the brain and spinal column.
Definition of Hydrocephalus ex-vacuo. Hydrocephalus ex-vacuo: What is termed hydrocephalus ex-vacuo occurs when there is damage to the brain caused by stroke or injury, and there may be an actual shrinkage of brain substance. Although there is more CSF than usual, the CSF pressure itself is normal in hydrocephalus ex-vacuo. Hydrocephalus is an abnormal buildup of cerebrospinal fluid (CSF) in the ventricles of the brain. The fluid is most often under increased pressure and that pressure can compress and damage the brain.