Human brain.. It's parts and function.

Human brain ppt

1. BSC SEMINAR 2022 THE STUDY OF BRAIN PRESENTED BY :- MUKTA MANJARI SAHOO BSC 3 rd YEAR DEPARTMENT OF ZOOLOGY CHOUDWAR COLLEGE CHOUDWAR

2. CONTENT Introduction Structure and function of brain Fore Lobes of Brain Useful Tips of Brain Conclusion

3. INTRODUCTON Human brain is present in hard bony like structure called CRANIUM Covered by 3 layers :- MENINGES Space between the inner layer is filled with fluid :- CERIBOSPINAL FLUID Serves as a shock absorbing medium and protect the brain against shocks Grey matter present towards the periphery and white matter at the centre

4. THE BRAIN HAS FOLLOWING DIVISIONS Fore brain – cerebrum, diencephalon Mid brain – optic lobes Hind brain – cerebellum, medulla, oblongata

5. Structure of brain

6. FORE BRAIN OLFACTORY LOBES :- These club shaped widely spread bodies are visible from the ventral surface only. FUNCTIONS :- These are concerned with sense of smell.

7. CEREBRUM Major portion of the brain. Wrinkles determine intelligence. Cerebrum has two hemisphere. Both hemisphere are connected to each other by a bundle of nerve fiber called corpus callosum . Each hemisphere divide into four lobes.

8. Frontal lobes FRONTAL LOBE FUNCTIONS Controls problem solving Intellectual Activities Controls Attention Judgement Behaviour Muscle Movement

9. Parietal lobe Parietal lobe Pain Pressure Touch Visual Function

10. TEMPORAL LOBE Temporal Lobe Understanding language Behaviors Memory Hearing

11. Occipital lobe Occipital Lobe Vision Visual reception Visual interpretation

12. Diencephalon :- Rhomboid shaped lobe. Visible from inferior surface of brain. Lies between cerebrum and mid brain. Divided into Thalamus and Hypothalamus . Functions :- Function relay Centre of sensory impulses. Reflex Centre for muscular activities. Centre of emotions. Centre for water balance, blood pressure, body temperature, sleep and hunger. Hypothalamus controls the pituitary gland.

13. Mid brain :- It connects to brain with cerebellum of pons of hind brain. FUNCTIONS :- It relays motor impulses from cerebral cortex to the spinal cord and relay sensory impulses from the spinal cord to the thalamus reflexes for sight and hearing

14. HIND BRAIN CEREBELLUm :- Located bellow the cerebrum & above medulla oblongata consist of two large, cerebral hemispheres . Functions :- Controlled balance, coordination pressure.

15. Medulla oblongata :- Triangular shaped Medulla oblongata extends from pons to spinal cord. Functions :- Contains center for cardiac, respiratory and vasomotor activities. Coordinates reflexes like swallowing, coughing, sneezing and vomiting.

16. Brain stem Relay center connecting the cerebrum to the spinal cord breathing, heartrate body temperature, wake and sleeping, digestion, sizing, coughing, vomiting and sollowing cerebrum Touch, vision, hearing, speech, reasoning, learning, controlling, movement cerebellum Co-ordinate muscle, movement, maintain posture and balance.

17. Useful Tips for healthy brain :- Get plenty of sleep. Play memory games. Manage stress. Take plenty of water. Eat leafy vegetables and fruits .

18. Conclusion :- The human brain is an amazing and complex structure. The function of the brain is to exert centralized control over the other organs of the body. The acts on the rest of the body both by generating patterns of muscle activity and by driving the secretion of hormones. This centralized control allow rapid and coordinated responses to changes in the environment. Sum basic types of reflexes can be mediated by the spinal cord but sophisticated purposeful control of behavior based on complex sensory input requires the information integrating capabilities of a centralized brain.