The Central Nervous System Essay

2213 Words Mar 25th, 2016 null Page
1.1 Overview

CSF definition
It is a well-known fact that the brain lies within the skull and the spinal cord lies within the vertebral column. Between the soft neutral tissues and the bones that house them are three types of membranous coverings called meninges. Some of the space between these coverings is called subarachnoid space and filled with clear and colorless fluid (cerebrospinal fluid “CSF”). CSF circulates inside the central nervous system through the ventricular part of this system and is finally absorbed into the bloodstream. Thus, the central nervous system literally floats in a cushion of CSF.1
CSF function
CSF is going under continuous circulation and as a result the central nervous system literally floats in a cushion of CSF. This cushion protects the two major areas of the central nervous system (the brain and the spinal cord) by surrounding them and acts as a shock-absorbing fluid against sudden and jarring movements. CSF also plays a major role in delivering nutrients and proteins to brain tissues and carries waste products away. This function is essential for brain tissues to keep normal function and maintain required nourishment. Moreover, CSF dynamic equilibrium between production and absorption helps in maintain pressure balance in the brain. “Failure to fulfill any of these major roles may cause serious damage to the nervous system, resulting in brain damage or death”2.3
CSF formation and flow rate
CSF formation rate is about 20 ml/hour or 500…

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