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The Human Brain

Danica Joan June 16, 2022

Here are some facts about the human brain:

  • Size: approximately 3 lb of tofu like tissue

  • contains approximately 1.1 trillion brain cells neurons

  • contains approximately 100 billion gray matter neurons

  • activity always on 24/7/365 with instant access to information on demand

  • consumes 20 to 25% of the body’s blood flow, oxygen, and glucose fuel

  • speeds: neurons fire approximately 5 to 50 times per second

  • signals crossing your brain travel on 10 of a second

  • connectivity: typically neuron has 5,000 connections with other neurons

  • the average human brain has approximately 500 trillion synapses (firings) creating neuropeptide chains (wirings)