Between the arachnoid mater and the pia mater is the subarachnoid space which contains cerebrospinal fluid . This fluid circulates within the slim spaces between cells and thru the cavities in the mind referred to as ventricles, to support and protect the brain tissue. Blood vessels enter the central nervous system via the perivascular area above the pia mater. The cells in the blood vessel walls are joined tightly, forming the blood–brain barrier which protects the mind from toxins that may enter through the blood.
Causes and Risk FactorsRisk elements embrace publicity for long durations to ionizing radiation or to chemical compounds, corresponding to vinyl chlorides, aromatic hydrocarbons, triazenes and N-nitroso compound. Genetically inherited diseases, such as tuberous sclerosis and von Hippel-Lindau illness, may make a person vulnerable to brain tumors. Three out of five individuals who undergo from brain tumors are male.