Search results
Results from the WOW.Com Content Network
In chemistry, initiation is a chemical reaction that triggers one or more secondary reactions. Initiation creates a reactive centre on a molecule which produces a chain reaction . [ 1 ] The reactive centre generated by initiation is usually a radical , but can also be cations or anions . [ 2 ]
The reaction begins in the amygdala, which triggers a neural response in the hypothalamus. The initial reaction is followed by activation of the pituitary gland and secretion of the hormone ACTH. [19] The adrenal gland is activated almost simultaneously, via the sympathetic nervous system, and releases the hormone epinephrine.
Surprise (pronunciation ⓘ) is a rapid, fleeting, mental and physiological state.It is related to the startle response experienced by animals and humans as the result of an unexpected event.
A summary of the pathophysiology of a type 1 hypersensitivity reaction. Type I hypersensitivity can be further classified into immediate and late-phase reactions. Within minutes of exposure to an antigen, the immediate hypersensitivity occurs, releasing histamines and lipid mediators which are responsible for the initial allergic reaction response.
Like, something like that, just your initial reaction's not to hold your hands on your face.' Macaulay did have brilliant instinct comedically, even at that young age. He kept his hands glued to ...
The orienting response is a reaction to novel or significant stimuli. In the 1950s the orienting response was studied systematically by the Russian scientist Evgeny Sokolov , who documented the phenomenon called " habituation ", referring to a gradual "familiarity effect" and reduction of the orienting response with repeated stimulus presentations.
Tom Brady revealed his initial reaction when he found out Bill Belichick decided to become the next head coach of the North Carolina Tar Heels. Brady talked about his former coach’s decision ...
When initial delays were announced, Variety reported that the decision was made to secure an Imax release window and allow more time for an ample post-production schedule. Based on these first ...