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Forebrain:
The largest part of the brain that you see in Fig. is the cerebrum. It consists of two halves or hemispheres joined together by a band of nerve fibres. Interestingly the crossing over of nerve fibres here causes the right half to control the actions.of the left side of the body and vice versa. The outer surface of the cerebrum is the cerebral cortex. It is often referred to as the 'grey matter' because of its colour. It is profusely supplied with blood vessels. The cortex was explored in a very fascinating way, particularly by a Canadian neuro- surgeon, Wilder Penfield: Since 1900's it was known that the brain cpntained no pain :ceptors and.hence it could be operated upon, without making the person unconscious: local anesthesia, the top of the skull could be removed like a cap to expose the cortex. Penfield did exactly this and he stimulated different parts of the cortex, one by one, by matching them with an electric wire or probe. He was amazed to observe the reactions of the dtients. On touching one part of the cortex with the probe, the patients could see, hear or nell or feel! Patients could revive old memories. Some reported hearing the sound of a articular song; one woman felt as if her daughter was in the room talking to her; another. erson could actually recollect the smell of flowers! Stimulation of other regions caused notor responses such as the movement of an arm or leg.
Solid waste Solid waste in some cases can be a resource. A good example is the factory at Yokohama in Japan which is engaged in converting waste paper into toilet paper. In our
Define Metabolism - Physiology of Growth and Development Resting metabolic rate of a newborn is twice as that of an adult/unit body weight basis. Since only colostrums are avai
Why chemical fertilizers should be supplemented by organic manure? Exclusive use of chemical fertilizer will eliminate organic matter and thus organisms from the soil. Important
i have to fill in the blanks on a cyclical version of the scientific method
Folic acid has the following important physico-chemical properties: a) It is a yellow, spear-shaped crystalline substance. b) The compound is sparingly soluble in water.
Layers of the Sun: Tbe Sun's body is made up of several layem Tbe layer that forms the viable surface of the Sun is called the photosphere-it is the surface that demarca
How are babys produced
The ability of rock or soil to transmit water is known as its: Permeability
what is ment by general organization in phylum annelida
Explain Maximum Tubular Secretory Capacity The maximum rate at which tubules can transport a substance from the blood vessel to the lumen or from the lumen to the blood vessel
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