THE IMPORTANCE OF SLEEP

BRAIN FACTS

By

Tuan NoorMarziani Binti Tuan Hussin

A123457

• The human brain is part of the central nervous system, which also includes the spine
  


• It consists of 100 billion neurons or nerve cells, that send information to each other



• The brain has many function, such as memory, learning, and emotion.



• The skull, which is made of bone, protects the brain.



• The evarage human brain weighs is around 1300g-1400g. This comparesto 700g for the brain of an elaphant, 420g for chimpanzee, 500g for a cow , 840g for a dolphin, and 30g for a cat.



• The human brain is about 2% of the evarage body weight.