PPT: Nervous System | Science Class 5 PDF Download

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N E R V O U S S Y S T E M
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N E R V O U S S Y S T E M L e t ' s t h i n k a b o u t H a v e y o u e v e r w o n d e r e d h o w w e a r e a b l e t o s e e d i f f e r e n t c o l o r s a n d s h a p e s ? H a v e y o u e v e r w o n d e r e d h o w w e a r e a b l e t o h e a r d i f f e r e n t s o u n d s , l i k e m u s i c o r p e o p l e t a l k i n g ?
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N E R V O U S S Y S T E M L e t ' s t h i n k a b o u t H a v e y o u e v e r w o n d e r e d h o w w e a r e a b l e t o s e e d i f f e r e n t c o l o r s a n d s h a p e s ? H a v e y o u e v e r w o n d e r e d h o w w e a r e a b l e t o h e a r d i f f e r e n t s o u n d s , l i k e m u s i c o r p e o p l e t a l k i n g ? N e r v o u s S y s t e m T h e n e r v o u s s y s t e m i s m a d e u p o f b r a i n , s p i n a l c o r d a n d n e r v e s .
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N E R V O U S S Y S T E M L e t ' s t h i n k a b o u t H a v e y o u e v e r w o n d e r e d h o w w e a r e a b l e t o s e e d i f f e r e n t c o l o r s a n d s h a p e s ? H a v e y o u e v e r w o n d e r e d h o w w e a r e a b l e t o h e a r d i f f e r e n t s o u n d s , l i k e m u s i c o r p e o p l e t a l k i n g ? N e r v o u s S y s t e m T h e n e r v o u s s y s t e m i s m a d e u p o f b r a i n , s p i n a l c o r d a n d n e r v e s . T h e b r a i n i s a n i m p o r t a n t o r g a n o f o u r b o d y . I t i s t h e c o n t r o l c e n t r e o f o u r b o d y . I t s e n d s a n d r e c e i v e s m e s s a g e s f r o m d i f f e r e n t p a r t s o f t h e b o d y t h r o u g h s p i n a l c o r d a n d n e r v e s . I t i s p r o t e c t e d b y t h e b o n y s k u l l . T h e s p a c e b e t w e e n t h e b r a i n a n d t h e s k u l l i s f i l l e d w i t h a f l u i d t h a t a c t s a s a s h o c k  a b s o r b e r . T h i s f l u i d p r o t e c t s t h e b r a i n f r o m i n j u r i e s . B r a i n
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N E R V O U S S Y S T E M L e t ' s t h i n k a b o u t H a v e y o u e v e r w o n d e r e d h o w w e a r e a b l e t o s e e d i f f e r e n t c o l o r s a n d s h a p e s ? H a v e y o u e v e r w o n d e r e d h o w w e a r e a b l e t o h e a r d i f f e r e n t s o u n d s , l i k e m u s i c o r p e o p l e t a l k i n g ? N e r v o u s S y s t e m T h e n e r v o u s s y s t e m i s m a d e u p o f b r a i n , s p i n a l c o r d a n d n e r v e s . T h e b r a i n i s a n i m p o r t a n t o r g a n o f o u r b o d y . I t i s t h e c o n t r o l c e n t r e o f o u r b o d y . I t s e n d s a n d r e c e i v e s m e s s a g e s f r o m d i f f e r e n t p a r t s o f t h e b o d y t h r o u g h s p i n a l c o r d a n d n e r v e s . I t i s p r o t e c t e d b y t h e b o n y s k u l l . T h e s p a c e b e t w e e n t h e b r a i n a n d t h e s k u l l i s f i l l e d w i t h a f l u i d t h a t a c t s a s a s h o c k  a b s o r b e r . T h i s f l u i d p r o t e c t s t h e b r a i n f r o m i n j u r i e s . B r a i n T h e b r a i n h a s t h r e e m a i n p a r t s : 1 ) C e r e b r u m                                        2 ) C e r e b e l l u m                                  3 ) M e d u l l a o b l o n g a t a . It is the largest part
of the human brain.
It has many grooves
and folds. It is the
centre of
intelligence. It
controls our sense
organs. It is
responsible for
thinking, learning
and reasoning.
It lies below the cerebrum. It controls
and coordinates the movement of
muscles. It also helps in maintaining
the balance of our body.
It is also called the
brain stem. It lies at
the base of the
brain. It connects
the brain to the
spinal cord. It
controls
involuntary actions
like breathing,
digestion,
swallowing and
heartbeat.