The nervous system

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THE NERVOUS SYSTEM 1.- FUNCTIONS OF THE NERVOUS SYSTEM 2.- THE BRAIN 3.- THE SPINAL CORD 4.- THE NERVES ENDINGS

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Transcript of The nervous system

Page 1: The nervous system

THE NERVOUS SYSTEM

1.- FUNCTIONS OF THE NERVOUS SYSTEM2.- THE BRAIN3.- THE SPINAL CORD4.- THE NERVES ENDINGS

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Functions of the nervous system

1.- It let us perceive what happens around us.

2.- It let us form responses, like mouvements.

3.- It co-ordinates all the organs and systems in the human body.

4.- The brain, the spinal cord and the nerves form the nervous system

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THE BRAINTHE BRAIN

The brain is in the head.

The bones of skull protect it.

Several organs form the brain:

1.- the cerebrum, 2.- the cerebellum 3.- and the brain stem

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1.- The cerebrum

It is the biggest organ.It controls all voluntary actions (speaking too!!)It also stores data and experiences.It is related to feelings.

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2.- The cerebellum

It is located below the cerebrum.It co-ordinates movements.It controls balance.

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3.- The Brain Stem

It communicates the brain with the spinalcord.

It controls many organs in the human body (the heartbeats and the movements when we breathe)

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THE SPINAL CORD

It is in the back.It goes from the top to the bottom.It is protected by the vertebrae of the spinal cord.It is shaped like a cilinder.It is attached to the brain stem.Many nerves leave the spinal cord. They go to the organs and extremities.It controls involuntary movements (reflexes)

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NERVESNERVESThey are shaped like long fibres.

They communicate the brain and the spinal cord with the rest of the human body.

1.- Sensitive nerves: carry information from the organs to the cerebrum and the spinal cord (auditory nerve)

2.- Motor nerves: carry information from the brain and the spinal cord to the organs

They co-ordinate the function of the whole body

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In your opinion, what Homer’s brain can co-ordinate?


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