The brain and spinal cord

The brain controls the body’s functions. It is made of different parts that fulfill very specific tasks.

The brain and spinal cord, or central nervous system, control how we think, feel, learn, move and other body functions.

Layers of tissue called the meninges surround and protect the brain. A fluid called cerebrospinal fluid (CSF) circulates between some of the layers to help cushion the brain.

The brain is made up of billions of nerve cells that communicate with each other through a network of nerves. Messages between the brain and parts of the body travel through nerves in the spinal cord.

The main parts of the brain are:

  • The cerebrum – it is the largest area, made of two halves. The right half controls the left side of the body and the left the right. Each half divides into four lobes that control different functions, such as, thinking, memory, behaviour, personality, learning, hearing, sight, language and touch.
  • The cerebellum – this is at the back of the brain and controls balance and coordination.
  • The brain stem – controls vital functions such as breathing and heart rate.
  • The pituitary gland – at the base of the brain, it controls hormone production in the body.

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