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3 Νοε 2023 · The CSF acts as a shock absorber, by providing a fluid buffer and thus protecting the brain from injury. It provides neutral buoyancy that prevents the brain from compressing the blood vessels and cranial nerves against the internal surface of the bones of the skull.
Protection: CSF protects the brain tissue from injury when jolted or hit. Chemical stability: CSF flows throughout the inner ventricular system in the brain and is absorbed back into the bloodstream, rinsing the metabolic waste from the central nervous system (CNS) through the blood-brain barrier.
Venous Return from the Brain. After passing through the CNS, blood returns to the circulation through a series of dural sinuses and cerebral veins (Figure \(\PageIndex{5}\)). The dural sinuses are housed within the two layers of the dura mater.
The brain has several forms of protection from injury. First is the skull which is composed of thick bone. Between the skull and the brain itself are three protective membranes, the meninges: Dura mater: a thick layer of tissue attached to the skull and forming sheets between the two cerebral hemispheres (the falx cerebri) and between the ...
The most obvious is our 7mm thick skull, but the brain is also surrounded by protective fluid (cerebrospinal – of the brain and spine) and a protective membrane called the meninges. Both provide further defence against physical injury. Another protective element is the blood–brain barrier.
The field of brain fluid transport encompasses CSF formation and flow pathways, ventricular morphology, brain extracellular space constitution, brain clearance, CSF drainage sites, and many other factors.
6 Νοε 2023 · Table 1 lists the protections of the brain reviewed here, which prevent damage from external trauma; from hypoglycaemia and hypoxia, from extremes of blood pressure and from tissue breakdown generally (acquired resilience).
