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• A cell that responds to a stimulus

  Receptor cell
• Receptor cells are transducers, whats that


  transducers convert energy from on form (light heat or sound) into energy in an electrical impulse within a sensory neurone
• where are receptors found

  in sense organs
• receptors in the eye are specialised cells that do what?

  they detect a specific type of stimulus and influence the electrical activity of a sensory neurone
• when receptor cells are stimulated they become?

  depolarised
• if weak stimulus


  cells are not sufficiently depolarised and sensory neurone is not activated to send impulses
• if strong stimulus


  sensory neurone is activated and transmits impulse to CNS
• Sensory receptors are located on or within skin, muscles, joints, tendons, blood vessels, internal organs, etc.