大象传媒

Coordination and control - The nervous system - Edexcel The brain

The nervous system enables humans to react to their surroundings and to coordinate their behaviour. It comprises billions of neurones, and it uses electrical impulses to communicate very quickly.

Part of Biology (Single Science)Cells and control

The brain

The brain controls complex behaviour. It is made of billions of interconnected and has different regions that carry out different functions.

The brain contains the following main areas:

  • cerebral hemispheres
A labelled diagram of the brain
Figure caption,
The structure of the brain

There are four main areas in the brain:

Cerebral hemispheresThe cerebrum's outer layer, it is split into two hemispheres and is highly folded. These two hemispheres make up the cerebral cortex. This controls most of our senses, intelligence, personality, conscious thought and high-level functions, such as language and verbal memory.
CerebellumControls balance, co-ordination of movement and muscular activity.
Medulla oblongataControls unconscious activities such as heart rate and breathing rate.
HypothalamusRegulates temperature and water balance within the body.
Cerebral hemispheres
The cerebrum's outer layer, it is split into two hemispheres and is highly folded. These two hemispheres make up the cerebral cortex. This controls most of our senses, intelligence, personality, conscious thought and high-level functions, such as language and verbal memory.
Cerebellum
Controls balance, co-ordination of movement and muscular activity.
Medulla oblongata
Controls unconscious activities such as heart rate and breathing rate.
Hypothalamus
Regulates temperature and water balance within the body.