SRINU-KRIYA-NANO-SCALE-TO-NEUROSCIENCE.

                                       NANO SCALE.
      HAI friennds this information may useful to the GG practitionars,with curtesy of -scalable neuroscience-thomas dean,google inc.

• Average number of neurons in the brain=100billion(100^11).
• Diameter of neuron=4-100um(micron)(granule,motor).
• Ratio grey to white matter=(1.3,1.1,1.5)by age(20,50,100).
• Percentage of oxygen consumption by white matter is6%.
• Percentage of oxygen consumpiton by grey matter is94%.
• Number of neocortical neurons20billion(10^10).
• Average loss of neocortical neurons=100,000 per day(10^5).
• Number of synapses in cortex=0.1quardrillion(10^14).
• Number of cortical layers=6.

            Thickness ofcerbral cortex=1.5-4.5mm.

• Total surface area of the cerebral cortex=2,500cm^2.
• Number of synapses for a typical neuron=1000to10,000.
• Single sodium pump transport rate=200/100Na/K ions/sec.
• Number of sodium pumps=1000 per um^2 of membrane.
• Total number of sodium pumps for a small neuron=1 million.
• Voltage gated sodium channels at each node=1000 per um^2.
• Voltage gated sodium channels between nodes=25 per um^2.
• Sodium channels in unmyelinated axon=100 per um^2.
• Membrane surface of a typical neuron=250,000 um^2.

Area of 100 billion neurons=25000m^2,Neurotransmitter molecules in one synaptic vessel is 5000,Action potential(1,10,100)m/sec by diameter(0.1,10)um.