Brain by suresh
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The document summarizes the structure and lobes of the human brain. It discusses the cerebrum, which is divided into two hemispheres and four lobes. It describes the cerebral cortex as the outermost layer of gray matter. It defines gyri as elevated ridges, sulci as small grooves dividing gyri, and fissures as deep grooves generally dividing large regions of the brain. It lists the four brain lobes and provides some interesting facts about brain development and size comparisons across species.
Brain by suresh
- 2. Structure
- 3. The CerebrumLobes, the Cerebral Cortex, and Cortical Regions of the Brain
- 4. The largest division of the brain. It is divided into two hemispheres, each of which is divided into four lobes.CerebrumCerebellum
- 5. Cerebral Cortex - The outermost layer of gray matter making up the superficial aspect of the cerebrum.Cerebral Cortex
- 6. Cerebral Features:Gyri – Elevated ridges “winding” around the brain.
- 7. Sulci – Small grooves dividing the gyri
- 8. Central Sulcus– Divides the Frontal Lobe from the Parietal Lobe
- 9. Fissures – Deep grooves, generally dividing large regions/lobes of the brain
- 10. Longitudinal Fissure – Divides the two Cerebral Hemispheres
- 11. Transverse Fissure – Separates the Cerebrum from the Cerebellum
- 12. Sylvian/Lateral Fissure – Divides the Temporal Lobe from the Frontal and Parietal LobesGyri – Elevated ridges “winding” around the brain.Gyri (ridge)Sulci (groove)Fissure (deep groove)
- 13. Sulci – Small grooves dividing the gyri.Gyri (ridge)Sulci (groove)Fissure (deep groove)
- 14. Fissures – Deep grooves, generally dividing large regions/lobes of the brain.Gyri (ridge)Sulci (groove)Fissure (deep groove)
- 17. Interesting Facts About Brain After the one year from birth our brain developed up to 90% and after two year later brain developed up to 98%.
- 18. Our brain fully developed at the age of 18.
- 19. At the birth our brain weight is 350-400g while A developed brain contains about 1300-1400g.
- 20. A cat brain weights about 30g while A elephant’s brain weight is 6000g.
- 21. The human brain has about 100,000,000,000 (100 billion) neurons while A octopus brain has about 300 million neurons.
- 22. If proper blood supply stopped in brain then Unconsciousness will occur after 8-10 seconds.
- 23. The weight of an adult human cerebellum is 150 g.
- 24. Our brain can alive without oxygen for 4 to 6 minute after that cells begin die.
- 25. The energy used by the brain is enough to light a 25 watt bulb.
- 26. A living brain is so soft you could cut it with a table knife.Thank You