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Stimuli

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Stimuli 

in biology, various alterations in the external or internal environment of an organism that are capable, when acting on a biological system such as nervous, muscular, or glandular tissue, of altering the system’s original state, that is, of producing excitation. Stimuli may be physical, chemical, and physicochemical and adequate or inadequate. They affect specific nerve endings (receptors) and other cells of organs and tissues.



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He was simply the most tremendous response to stimuli I have ever known.
Farebrother--his effort after the cynical pretence that all ways of getting money are essentially the same, and that chance has an empire which reduces choice to a fool's illusion--was but the symptom of a wavering resolve, a benumbed response to the old stimuli of enthusiasm.
 
 
 
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