What are sensory receptors?

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  • In general how do sensory systems function

    • Sensory receptors function...

    What is the sensory system

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  • Sensory receptors function
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  • What are the general senses

    • 36.2: Sensory Processes - Transduction and Perception

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    Learning Objectives
    • Explain how stimuli are converted to signals that are carried to the central nervous system

    Transduction

    The most fundamental function of a sensory system is the translation of a sensory signal to an electrical signal in the nervous system.

    This takes place at the sensory receptor. The change in electrical potential that is produced is called the receptor potential. How is sensory input, such as pressure on the skin, changed to a receptor potential?

    5 sense organs and their functions

    As an example, a type of receptor called a mechanoreceptor possesses specialized membranes that respond to pressure. Disturbance of these dendrites by compressing them or bending them opens gated ion channels in the plasma membrane of the sensory neuron, changing its electrical potential.

    In the nervous system, a positive change of a neuron’s electrical potential (also called the membrane potential), depolarizes the neuron. Receptor potentials are graded potentials: the magnitude of these graded (receptor) pote