Anatomy of the Eye Quiz

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Questions and Answers

Which part of the eye regulates the amount of light that passes through the lens?

  • Retina
  • Iris (correct)
  • Optic nerve
  • Cornea

What is the main function of the lens in the eye?

  • To protect the eye from foreign objects
  • To focus light onto the retina (correct)
  • To transmit visual information to the brain
  • To regulate the amount of light entering the eye

Which of the following is responsible for regulating the amount of light that enters the eye?

  • Optic nerve
  • Retina
  • Iris (correct)
  • Cornea

¿Cuál es la función principal del lente en el ojo?

<p>Regular la cantidad de luz que pasa por el lente (D)</p> Signup and view all the answers

¿Qué parte del ojo regula la cantidad de luz que pasa a través del lente?

<p>El iris (C)</p> Signup and view all the answers

¿Cuál es la función principal del cristalino en el ojo?

<p>Enfocar la luz en la retina (B)</p> Signup and view all the answers

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Study Notes

Light Regulation in the Eye

  • The iris is the part of the eye that regulates the amount of light entering by controlling the size of the pupil.
  • The pupil changes size in response to light intensity; constricting in bright light and dilating in dim light.

Function of the Lens

  • The lens focuses light onto the retina, allowing for clear vision at various distances.
  • It changes shape to help adjust focus for near or far objects, a process known as accommodation.

Main Functions

  • The primary function of the lens (or cristalino in Spanish) is to refract light and ensure it is properly directed to the retina.
  • Clarity and flexibility of the lens are crucial for maintaining vision quality as the eye ages.

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