Sensory Receptors and Adaptation
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Questions and Answers

Which sensory receptor is primarily responsible for detecting light, sustained touch, and texture, and is typically grouped in clusters known as touch domes?

  • Merkel’s disc (correct)
  • Meissner’s corpuscle
  • Ruffini’s corpuscle
  • Pacinian corpuscle
  • Which type of sensory receptor is known for its rapid adaptation and is primarily involved in the detection of vibrations and rapid changes in touch?

  • Ruffini’s corpuscle
  • Pacinian corpuscle (correct)
  • Merkel’s disc
  • Meissner’s corpuscle
  • Which of the following receptors would be MOST responsible for sensing the pressure of a firm handshake?

  • Merkel’s disc
  • Pacinian corpuscle
  • Ruffini’s corpuscle (correct)
  • Meissner’s corpuscle
  • Which of these receptors is commonly found in the fingertips and is responsible for detecting low-frequency vibrations and sensitive movements across the skin surface?

    <p>Meissner’s corpuscle</p> Signup and view all the answers

    Which of the following sensory receptors is characterized by its slow adaptation and is primarily involved in the detection of prolonged touch and deep pressure?

    <p>Ruffini’s corpuscle</p> Signup and view all the answers

    Study Notes

    Types of Sensory Receptors

    • Pacinian Corpuscle

      • Located in skin and fascial tissue
      • Sensitive to rapid touch and vibration
      • Adapts incredibly fast, at a rate of 1/100th of a second
    • Ruffini’s Corpuscle

      • Consists of multibranched encapsulated endings
      • Primarily responsible for sensing prolonged touch and deep pressure
      • Located in joints and adapted slowly
    • Merkel’s Disc

      • Found in expanded tip tactile receptors on fingertips and hairy skin
      • Forms structures known as touch domes
      • Detects light, sustained touch and texture
      • Adaptation speed is slower compared to other receptors
    • Meissner’s Corpuscle

      • Located in non-hairy skin, specifically fingertips and lips
      • Sensitive to gentle movements across the skin surface
      • Responds to low frequency vibrations, adapting in a fraction of a second
    • Free Nerve Endings

      • Present in skin and cornea of the eye
      • Sensitive to touch, pressure, and pain
      • Adaptation speed is long, allowing for sustained responses

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    Description

    This quiz covers the different types of sensory receptors, including Pacinian corpuscle, Ruffini's corpuscle, Merkel's disc, and Meissner's corpuscle, and their roles in detecting touch, vibration, pressure, and texture.

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