areas of the motor cortex responsible for precise movements, for example, of the

Question

areas of the motor cortex responsible for precise movements, for example, of the fingers and mouth A) take up a larger area of the motor cortex B) take up a smaller area of the motor cortex C) are controlled by only the right side of the motor cortex D) are controlled by only the left side of the motor cortex After experiencing a severe brain injury in a dirt-bike accident that permanently damaged much of his right motor cortex, nine-year-old Amir was partially paralyzed on the left side of his body. After several months of intensive physical therapy, he partially regained the use of his left leg and left arm. This example best illustrates the principle of A) lateralization B) localization C) plasticity D) neurogenesis The brain often attempts self-repair by reorganizing existing tissue, but it sometimes also attempts to mend itself by producing new brain cells. The latter process is known as A) plasticity B) neurogenesis C) lateralization D) reorganization According to evolutionary psychologists, our predisposition to overconsume fatty, high calorie foods illustrates that we are biologically prepared to behave in ways that promoted the A) reproductive success of B) genetic diversity of C) cultural similarity of D) development of mutations in of our ancestors. Identical twins separated at birth and raised in completely different home environments would be most likely to have similar A) moral values B) religious beliefs C) personality traits D) political attitudes While you are reading your textbook, you are aware of your thoughts, sensations, memories, and physical location. Collectively, this awareness is referred to as A) meditation B) consciousness***Just select answer B for this item*** C) alertness D) selective attention

Explanation / Answer

The answer is A…As in the motor cortex, the area in it is not according to the size of the body parts but is in accordance to the number of nerves and sensitivity in the related area. Therefore there is a larger area covering in the motor cortex for fingers and mouth which have high sensitivity. The answer is Plasticity…. As due to damage and use of physical therapy the body was able to regain movement which happens due to plasticity. The answer is B… Neuro-genesis is not only reorganization of the existing tissues but also production of new brain cells in order to mend itself, even during adulthood. However, Plasticity is just about reorganization and addition or removal of new connections after damage or experience mainly during childhood. The answer is A …we are evolutionarily wired to be follow habits that have lead to reproductive success of our ancestors as we all function on the basis of survival of the fittest. So during the ancient times we required more fatty food as they used to work manually and extinsevly in hunt of food and other things. The answer is C… as studies on personality disorders have find that identical twins have higher chances of inheriting similar disorder with difference in levels and severity, other all options are more nurturing and environmentally based, as compared to personality traits as they are more genetically based.

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