The brain

PUBLISHED : Thursday, 01 February, 2007, 12:00am
UPDATED : Thursday, 01 February, 2007, 12:00am

Brainy facts

By the age of five, the brain is already about 90 per cent of its adult size.

The brain uses 20 per cent of all the __________we breathe.

A continuous supply of oxygen is necessary for _________

A loss of oxygen for 10 minutes can result in significant damage to the brain.

Your brain uses 20 per cent of the blood in your ______.

The brain needs a constant blood _______ to keep up with the demands of your body.

Lead poisoning from pollution

China was emitting 800 times the acceptable levels. Hundreds of villagers have tested positive for excessive amounts of lead in their blood.

Use these words to fill in the blanks above: flow, body, survival, brain damage, oxygen

'It's not my fault!'

How many times have you said or heard that?

Surging hormones are often blamed for teenage anxieties. More and more, however, scientists are realising that important changes occur in the brain during the teen years.

'Girls seem so much smarter'

Neuroscientist Jay Giedd (US) reported that the type of brain tissue that processes information increases until about age 11 in girls and 13 in boys.

After that it starts to slowly decrease. The results mean girls' brains tend to mature more quickly than boys' brains do, but they are not smarter overall.

Did you know?

Spurts in brain development and not sudden bouts of craziness, they say, may help explain why children start caring about different things, acting in new ways, and taking risks as they make the transition to adulthood.

1. Circle or highlight words on this page that have double letters.

2. What word has the most syllables on this page?

'Use it or lose it!' some say.

Your brain needs exercise like the rest of your body.

Games and puzzles can help activate the brain and ward off dementia.

To do

Play Sudoku every day with the South China Morning Post to help exercise your brain. Find it in today's newspaper and play, or have a class competition.


Fill in the blanks: oxygen, survival, body, flow; missing word in caption: brain damage; Did you know? 2. neuroscientist