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| A scientist who studies the brain and the nervous system. |
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| The two large hemispheres that cover the upper part of the brain. It is the most higly developed and complex part of the human brain. |
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| The layer of tissue that forms the outer layer and surface of the cerebrum; responsible for basic sensory and motor functions, as well as higher mental processes. It is 3mm thick and contains 70% of the neurons in the central nervous system. It covers most of the brain with an outer layer of grey matter. |
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| Spongy tissue made up of cells. |
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| The increase in the size and wrinkling of the human cortex, compared with the cortex of other animals. |
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| A groove or furrow that divides an organ into lobes or parts. |
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| A thick band of fibres connecting the two hemispheres of the brain. |
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| A tendency to ignore the left or right side of one's body and the left or right side of visual space after damage to one of the brain hemispheres. |
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| How much does the human brain weigh? What is the brain body size ratio for humans? |
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Human brain weighs 1.5 kgs.
The size ratio is 1 to 60. |
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| Why is the cerebral cortex convoluted? |
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| The cortex in lower animals is small and smooth. I humans, it is higly convoluted(folded) and is the largest brain structure. These folds increase the cerebrum's surface area and, naturally, the number of neurons and neural connections possible. |
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