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[18-04-04] Status of Brain Tissue Blood Supply For Quantum Analyzer

Status of Brain Tissue Blood Supply For Quantum Analyzer:

Cerebral microcirculation usually refers to the blood vessels with the diameter <150 (m, including small arteries, capillaries and small veins. However, the definition of the microcirculation has not been widely accepted, and it is not clear whether the small arteries (based on anatomical criteria, the lumen diameter > 150 (m) belong to the microcirculation. Therefore, it is defined in accordance with the vascular physiology, namely the response of a single-vessel to elevated pressure inside the lumen, rather than in accordance with the diameter or structure. According to this definition, all those arteries whose lumen diameter has myogenic contractile responses to elevated pressure, and capillaries and small veins will be included in the microcirculation. The primary function of microcirculation is to make the supply of nutrients and oxygen in tissues change following with the change in demand; the second important role is to avoid the drastic fluctuation of hydrostatic pressure in capillaries to cause the exchange barrier of capillaries; and finally, the hydrostatic pressure is significantly reduced in the microcirculation level. Thus, microcirculation has an extremely important role in determining the total peripheral resistance. In addition, the microcirculation is also the first diseased parts of cardiovascular disease, in particular the inflammatory process.

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