blood-brain barrier

Neuroglia: Introduction, Classification and Functions

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The supporting cells of the nervous system that are non-excitable are called neuroglia or simply glia (glia=glue). They do not transmit nerve impulse (action potential) for which they are called non-neural cells or glial cells. They are about 10-15 times greater than the number of neurons. During infection, mostly they show or play an important … Read more

Cerebrospinal fluid, its formation and circulation

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Cerebrospinal fluid, its formation and circulation

Introduction of CSF It is a clear, colorless liquid and an ultra-filtrate of blood. It is present in the sub-arachnoid space of the meninges which provides a special environment in which the brain floats. It cushions the brain from hard blows and sudden movements. The weight of brain floating in CSF is only about 14% … Read more