THE NERVOUS SYSTEM 1 .- FUNCTIONS OF THE NERVOUS SYSTEM 2.- THE BRAIN 3.- THE SPINAL CORD 4.- THE NERVES ENDINGS
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
THE BRAIN T he 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
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.
2.- The cerebellum It is located below the cerebrum. It co-ordinates movements. It controls balance .
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)
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 )
NERVES They 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
In your opinion, what Homer’s brain can co-ordinate?