The Nervous System
lMakes up critical portion of the nervous system
lNerve cells connected by nearly 1 million miles of nerve
fibers
lHas the largest area of uncommitted cortex of any species giving humans flexibility for learning.
lBrain consumes about 20% of the body's energy .
lThe Brain uses about 1/5 of the body's oxygen.
lThe Brain gets about 8 gallons of blood each hour (supplying nutrients like glucose, protein, trace
elements, and oxygen).
lBrain needs 8-12 glasses of water a day for optimal functioning.
