Human brain

Human brain is covered by 3 layers....Viz....

1) Outer layer     =  DURAMATER

2) Middle layer   = ARACHNOID

3)Inner layer       = PIAMATER

In the inner protective layer the BRAIN is present.

Inner layer of the BRAIN are of 3 types:

1)FORE-BRAIN     = PROSENCEPHALON

2) MID-BRAIN      =MESENCEPHALON

3) HIND-BRAIN    =RHOMBENCEPHALON

1)FOREBRAIN: 

It is divided into 3parts

a) OL-FACTORY LOBE:

           Function:SMELL,TASTE

b) CEREBRAL HEMISPHERE/ CEREBRUM

            It is the largest part of the brain

           Function: READING, MEMORY, INTELLIGENCE, THINKING

c) DIENCEPHALON/ THALAMENCEPHALON

              Function:** It controls the metabolic activities of the body.

                               **It contains the nerve centres for TEMPERATURE REGULATION,HUNGER,THIRST, EMOTIONS.

2) MID-BRAIN

   It is divided into 2 parts viz.....

a) OPTIC LOBES:

           Function:It receives the sense of light.

b) CRURA CEREBRI:

           Function:It controls the activities of eye musce.

3) HIND-BRAIN:

   It is divided into 2 parts viz....

a) CEREBELLUM:

               *It is the second largest part of the BRAIN.

               Function: It controls BALANCE or EQUILIBRIUM of the body.

b)MEDULLA OBLONGATA:

               Function: It controls RESPIRATION, DIGESTION etc..

*****Key-points

Don't confuse on 

**a)CEREBRAL HEMISPHERE/CEREBRUM

  It is the largest part of the brain

**b) CEREBELLUM

  It is the second largest part of the brain.

Posterior part of the brain is

MEDULLA OBLONGATA

Anterior part of the brain is

OL-FACTORY LOBES,CEREBRAL HEMISPHERE.