10 Organisms Sense their Environment 3 categories of Receptors and Function o Mechanoreceptors Touch Hearing (special sense) Balance (special sense) o Chemoreceptors Taste (special sense) Smell (special sense) pH o Electromagnetic receptors Vision (special sense) Conveying sensory information o Stimulation o Transduction-energy is converted o Transition-potentials are translated to action potentials o Interpretation-brain forms perception of stimulus Sensory Transduction and Transmission o Receptor receives info from the stimulus its sensitive to. o Receptor potential is gated-larger stimulus larger the depolarization o Stimulus gated ion channels o If threshold is reached the action potential will be formed o Large stimulus produces a large receptor potential which results in frequent action potential Mechanoreceptors o Nociceptors Pain-receptors detect tissue damage are stimulated Noxious substances and tissue damage
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- Fall '16
- Biology, Ion channel, special sense