Define the Functions of Cerebrospinal Fluid
The CSF has many functions. These include the following:
1) It provides the optimum condition for a meaningful signal/stimulus. The neurons become very sensitive.
2) It helps in maintaining homeostasis. It can transmit neuronal messages to respond for chemo sensitivity which enhances the appropriate homeostatic signals.
3) It helps in removing the proteins which are leaked into the brain since no major lymphatic system prevails here. CSF further shunts these proteins to the blood stream.
4) It protects the brain as a cushion by absorbing all the shocks/jerks etc. It also helps the brain to remain floating inside the skull cavity.
5) It provides buoyancy to the brain. Because the brain is immersed in fluid, the net weight of the brain is reduced from 1400 g to about 50 g only. Therefore, pressure at the base of the brain is reduced.
6) It helps in the excretion of waste materials. The one-way flow from the CSF to the blood takes potentially harmful metabolites, drugs and other substances away from the brain.