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.
Neurons multiply at a rate 250,000 neurons/minute during early pregnancy. The weight of an adult human cerebellum is 150 g. The total volume of cerebrospinal fluid (CSF) is 125-150 ml. A total of 400-500 ml of cerebrospinal fluid (CSF) is produced every day.