When you plug your device into a charging socket or wall charger, the USB controller in your device talks to the USB controller attached to the socket/wall charger â or, if no controller is available, the device reads the voltage flowing across the four USB pins.
The volume of the ventricles is about 25 ml. CSF is produced at a rate of 0.2 - 0.7 ml per minute or 600-700 ml per day. The circulation of CSF is aided by the pulsations of the choroid plexus and by the motion of the cilia of ependymal cells.
SiteSection: Article. The normal cerebral blood flow is approximately 50ml/100g/min or 700 ml/min, which is roughly 14 % of the cardiac output. This ranges from 20ml/100g/min in white matter to 70ml/100g/min in grey matter.The Kety-Schmidt technique applies the Fick principal using N 2 O to calculate whole brain CBF.ressure autoregulation maintains CBF at a constant level in normal brain in the face of the usual fluctuations in blood pressure. It is a poorly understood local vascular mechanism. Normally autoregulation maintains a constant blood flow between MAP 50 mmHg and 150 mmHg.