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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
BLOO D VESSELS - Some vessles supply blood to wall of large vessels these are vessel of vessels or vasa vasorum . Mainly artery and vein, 2 types of vessels present.
Q. What are the symptoms of Rheumatic Heart Disease? Symptoms generally appear after 1 to 6 weeks of the fever and sometimes the infection may have been too mild to have been r
mentions chareacteristics and classificaton of protozoa?
What is the Importance of vitamin B 6 In the human and animal organisms, vitamin B 6 acts in the form of pyridoxal. In the form of 5'-orthophosphate (Pyridoxal-5'-phosphate),
Protein Classification Based on Shape There are three types of proteins on the basis of shape - Fibrous, Globular, Intermediate 1 . FIBROUS PROTEINS They ar
What is Genetic Recombination and Evolution ? Variation among the offspring of living organisms results from genetic recombination through sexual reproduction and mutation. Va
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detailnote on structure of stomach
Natural Classification Natural classification is based on the natural characters of the taxa. Some consider natural classification a phylogenetic one reflecting the evolutionar
Q. What does this fungus looks like? Ans. The important characteristic features of aflatoxicosis are jaundice, cirrhosis. Long term exposure to aflatoxins could lead to
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