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Q. Distinguish among the terms stimulus, sensation, and perception?
A stimulus is an energy source (chemical, light wave, pressure etc.) which activates a receptor cell (specialized nerve cell) to transmit a nerve impulse or sensation. If sensation arrives in conscious part of the brain, cerebral cortex, a perception occurs. Perception is awareness of stimulus. Pricking one's finger, for illustration is a stimulus which activates many receptor cells to send nerve impulses to the brain. Once these sensations reach cerebral cortex, a person perceives (feels) pain
Flagellates - Parasitic Protozoan Several flagellate protozoa parasitise man and live in the blood stream or tissues of the reticulo-endothelial system. Most significant of th
Although fructose does not have an aldehyde group it reacts first of all bonds of fructose was breaked by fehling solution then fructose coverted to aldehydic group then that
Q. In the phase when the cell is not dividing interphase is there activity within the cell nucleus? In the interphase there is intense metabolic activity in the cell nucleus th
Membrane Perforation of sinus graft surgery it is the most common complication during the sinus graft surgery resulting from the scoring of lateral access window for surgery an
Explain the term - Migraine Perhaps the most common neurological disorder, migraine afflicts some 5% to 20% of the population at some time in their lives. The World Federation
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Q. How do antibodies work to neutralize antigens? The immunoglobulins or antibodies act to facilitate the destruction of antigens: they attract phagocytic leukocytes, they dire
Endocrine versus Neural Integration A question that surely comes across your mind is, "what is the need for two types of integrative mechanisms, the neural and the endocrine"
1. DNA damage can occur spontaneously or be induced by external factors. Describe the types of DNA damage caused by external factors and how they are repaired in prokaryotes and eu
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