16_Sensory - Sensory Mechanisms Home Page 2006 D Julian The...

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1 Sensory Mechanisms © 2006: D. Julian Home Page The senses Sensory organs provide the only channels of communication from the external (and internal) world into the nervous system Receptor cells transduce a stimulus into electrochemical nerve impulses (i.e., APs) Five categories of receptor types: mechanoreceptors, pain receptors, thermoreceptors, chemoreceptors, and electromagnetic receptors. © 2006: D. Julian Sensory receptors in the human skin Campbell and Reece, Fig. 49.3 © 2006: D. Julian
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