Physiology of Vision Lecture 3 & 4 Quiz
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Questions and Answers

What is the function of the outer segment of photoreceptors?

  • Transduction of light energy into a receptor potential (correct)
  • Renewal of photoreceptor outer segments
  • Contain the cell nucleus, Golgi complex, and many mitochondria
  • Initiate the events that lead to the production of a receptor potential

    • What is the structural difference between the outer segments of rods and cones?

  • Cones have cylindrical or rod-shaped outer segments, while rods have tapered or cone-shaped outer segments
  • Rods and cones both have cylindrical or rod-shaped outer segments
  • Rods have cylindrical or rod-shaped outer segments, while cones have tapered or cone-shaped outer segments (correct)
  • Rods and cones both have tapered or cone-shaped outer segments

    • Where does the first step in visual transduction occur?

  • Inner segment
  • Proximal end
  • Synaptic terminals
  • Outer segment (correct)

    • What is the role of photopigments in photoreceptors?

    <p>Absorb light and undergo structural changes to initiate visual transduction</p> Signup and view all the answers

    How many types of photopigments are present in the retina?

    <p>$3$</p> Signup and view all the answers

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