水生一天
幼苗
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Sensors through afferent nerve message across to the brain,the brain is to a central command,in the brain after receiving information,will make corresponding reaction,through efferent nerve transmission of information to be effector,thus completing a movement.For example:human skin (sensors) by high temperature stimulation (burn,hot),it will be through afferent nerve "hot" of the information to the brain (headquarters),the brain will make a "from" command,through efferent nerve to muscle (effector),and a piece of muscle contraction (sports),avoid high temperature.
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