组胚翻译！

First, we to understand adrenaline of physiology function mechanism.Adrenaline to the living creature effect of machine body with many Mao protein the hormone be look like, then pass with the particularity of Ba cell be combine by body but produce result.The adrenaline is have by body α , the β is 2 types, the α is subjected to a body and can is divided into α 1, α 2 wait a second type, the β is been divided into one β : β by body 2 wait a second type.But person's eye===film eye pupil the top of the extension muscle just has α to be subjected to a body, so when adrenaline density in the body ascension, extend a muscle with eye pupil up of is combine by body, make its constringency, extend eye pupil thus.Again with front the adrenaline go up mechanism contact to get up, be a person to suffer special circumstances, if fear, frighten, worry anxiously, handing over feeling-adrenal glands a marrow this system will immediately adjust to move and the adrenaline secretes to have great c