The brain

Brain
The brain is encased in the bony skull, contains approx 25 billion neurons and weighs about 1.4kg. There are 3 main parts to the brain.
The cerebrum
The cerebellum
The brain stem

The cerebrum is the largest part and the controls memory, complex thought, logical thinking speech. The cerebrum coordinates muscular activity without thinking about it - balance, co- ordinate muscles when walking so that you do not fall over. The brain stem is the responsible for your heart beat pulse, digestion and breathing.

1 Name the three major structures of the brain and outline the main function of each.

The cerebrum controls the memory and logical thinking 

The Cerebellum coordinates muscular activity without thinking it 

The brain stem keeps your heart pulsing and you breathing and digestion

2 Recall the three structures that protect the brain.

Skull

Fluid 

Meningies 

3Explain why the ‘grey’ matter is concentrated in the cerebrum.

Because it is 90% grey matter 

4 Recall which part of the brain controls

breathing- the brain stem

balancing on a skateboard- the cerebellum

puzzle solving-cerebrum

Screative writing-left side of the brain

Explain why a major injury to the brain stem is often fatal.

Because the connection from the brain or rest of the body is lost and stops everything from working in the body.

If meninges are membranes that protect the brain, what is meningitis?

Meningitis is a brain sickness which is the infection of the meninges 

The brain of an average elephant weighs about six kilograms. Explain why it needs to be so large. 

Because the elephant is so large it needs a larger brain to fully operate and be more powerful to move the muscles in the elephant.

If the left side of the brain is damaged in an accident, it's often the right side of your body that is affected. Investigate why.

Because the motor neurons croos and travel down the spine the rest of the other side of the body