question_answer 72)

  What are the major parts of the brain? Mention the function of different parts.

Answer:

                    Brain is the most important coordinating centre in the body. It has three major parts or regions namely the fore-brain, mid-brain and hind-'brain.  

Parts	Functions
Fore-brain Cerebrum   Cerebral hemispheres   Olfactory lobes   Diencephalon   Motor areas	Main thinking part of the brain   Intelligence and voluntary actions   Centres of smell   Has centres of hunger, thirst, etc   Instructs muscles to do various types of jobs
Mid-brain   Tectum     Cerebral peduncle	Controls reflex movements of the neck, head and trunk in response to visual and auditory stimuli   Also controls the reflex movements of the 'eye muscles, changes in pupil size and shape of the eye lens
Hind-brain   Pons         Cerebellum   Medulla	Regulate respiration Relays information between the cerebellum and the cerebrum Maintaining posture and balance of the body   Enables us to make precise and accurate movements   Controls involuntary actions as breathing, etc Controlling centre for reflexes such as swallowing, coughing, vomiting, etc