Photoreceptor Structure and Function Quiz

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Questions and Answers

Which part of the photoreceptor contains light-sensitive photopigments?

  • Cell body
  • Outer segment (correct)
  • Inner segment
  • Synaptic terminal

What distinguishes rod photoreceptors from cone photoreceptors?

  • Cell body appearance
  • Inner segment appearance
  • Synaptic terminal appearance
  • Outer segment appearance (correct)

Which type of photoreceptor is more sensitive to light?

  • Cones
  • Both rods and cones
  • Neither rods nor cones
  • Rods (correct)

How many cones are estimated to be in each human retina?

<p>5 million (A)</p>
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How many rods are estimated to be in each human retina?

<p>92 million (D)</p>
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What is the term used to describe the presence of both rods and cones in the human retina?

<p>Duplex retina (D)</p>
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Which type of photoreceptor contributes to vision in nighttime lighting?

<p>Rods (D)</p>
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Which type of photoreceptor contributes to vision in daytime lighting?

<p>Cones (A)</p>
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Which type of lighting conditions involve both rods and cones in vision?

<p>Mesopic conditions (C)</p>
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How many types of photoreceptors are there in the retina?

<p>2 (B)</p>
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