EXTRACELLULAR AND CEREBROSPINAL FLUIDS

The mechanism of formation of extracellular fluid is first described, followed by an explanation of the relation between osmotic force, refl ection coefficient and molecular size. The possible mechanism of brain extracellular fluid formation is then proposed in relation to the res triction offered by the blood-brain barrier. The functions and composi tions of cerebrospinal fluid (CSF) are then described followed by sect ions on the process of formation of CSF, the non-electrolytes and prot eins in CSF, the drainage mechanisms and protein synthesis by the chor oid plexus.