HUMAN BRAIN.

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اَلسَلامُ عَلَيْكُم وَرَحْمَةُ اَللهِ وَبَرَكاتُهُ‎

TOPIC...

HUMAN BRAIN.

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                     INTRODUCTION.

THE BRAIN OF A HUMAN BEING IS THE CENTRAL ORGAN OF THE NERVOUS SYSTEM.THE HUMAN BRAIN CONSISTS OF THREE PARTS  NAMEELY :=

1.THE CEREBRUM.

2.THE BRAINSTEM.

3.THE CEREBELLUM.

THE BRAIN OF A HUMAN BEING PLAYS SIGNIFICANT ROLE AS IT CONTROLS MOST OF THE ACTIVITIES OF THE HUMAN BODY.

THE BRAIN IS LOCATED INSIDE THE HEAD AND PROTECTED BY THE SKULL BONES.THE BRAIN CONSISTS OF MORE THAN 86 BILLION NEURONS AND MOST EQUAL NUMBER OF OTHER CELLS.

THE STUDY OF BRAIN FUNCTIONS IS KNOWN AS NEUROSCIENCE.AN ADULT HUMAN BRAIN WEIGHTS ABOUT 1.2 TO 1.4  KG.WHICH IS ABOUT 2% OF THE TOTAL BODY WEIGHT.

PARTS OF HUMAN BRAIN.

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A HUMAN BRAIN IS PRIMARILY CLASSIFIED AS:=

1.FOREBRAIN. 

2.MIDBRAIN.

3.HINDBRAIN.

1.FOREBRAIN := 

FOREBRAIN IS LARGELY MADE UP OF CEREBRUM,THALAMUS,HYPOTHALAMUS AND PINEAL GLAND.

2.MIDBRAIN:=

MIDBRAIN IS LARGELY MADE UP OF A  PORTION OF THE BRAINSTEM.

3.HINDBRAIN:=

HINDBRAIN IS LARGELY MADE UP OF THE REMAINING BRAINSTEM,CEREBELLUM AND PONS.

                                  FURTHER;

THE BRAIN HEMISPHERE  IS CLASSIFIED INTO FOUR LOBES.THESE ARE :=

1.FRONTAL LOBE

2.PARIETAL LOBE.

3.TEMPORAL LOBE.

4.OCCIPITAL LOBE.

FUNCTIONS OF HUMAN BRAIN.

THE MAJOR FUNCTIONS OF THE  HUMAN BRAIN.THESE ARE:=

1.PERCEIVE OR SENSE THE SIGNAL COMING FROM THE ENVIRONMENT.

2.GIVING SENSE OF FEELING AND EMOTION.

3.REGULATING AND CONTROLLING THE HUMAN BEHAVIOURS.

4.............................................THE PHYSICAL ACTION.

5.REGULATING THE MEMORY FUNCTION.

6.THE PROCESS OF THINKING.

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