WHAT IS THE BRAIN MADE OF?
That part of the 'brain which does the thinking is made up of the bodies of millions of separate nerve cells. It is often referred to as grey matter; scientists call it the cortex. It is verythin, being from one-tenth to onequarter of an inch thick. In man and the intelligent animals this grey matter is on the outside of the brain, where it can grow; but in frogs, snakes and less intelligent animals, it is on the inside, where it is impossible to increase to any extent. Each of tlie cells of the 'brain has its own nerve fibre, and the great mass of these fibres make up the white part of tlie inside of the human brain. Some of the iibres connect the cells in the brain v and others run from the brain to nerve centres in the body, ol' to nerve cells in the spinal cord. The brain « like a telephone exchange, whw gathers in the sensations felt by tne nerve cells in the body.
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Auckland Star, Volume LXIII, Issue 67, 19 March 1932, Page 2 (Supplement)
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175WHAT IS THE BRAIN MADE OF? Auckland Star, Volume LXIII, Issue 67, 19 March 1932, Page 2 (Supplement)
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