Fox 15ed, Chapter 10 Visual Fields and Eye Movements Quiz
16 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the name of the high-velocity eye movements that keep the image focused on the fovea centralis?

  • Fixational movements
  • Saccadic eye movements (correct)
  • Vergence movements
  • Smooth pursuit movements
  • Which part of the ear contains the scala media or cochlear duct filled with endolymph?

  • Inner ear
  • Middle ear
  • Cochlea (correct)
  • Spiral organ
  • What occurs in the pigment epithelial cells?

  • Activation of the enzyme phosphodiesterase
  • Activation of the G-protein/2nd messenger system
  • Synthesis of Bathorhodopsin
  • Conversion of all-trans-retinol to 11-cis-retinal (correct)
  • What is the main factor that determines visual acuity?

    <p>Resolving power</p> Signup and view all the answers

    What is the role of phosphodiesterase in the visual cycle of retinal rod cells?

    <p>Converting cGMP to GMP</p> Signup and view all the answers

    Where are the sensory hair cells located in the cochlea?

    <p>Basilar membrane</p> Signup and view all the answers

    What effect does dissociation of rhodopsin have on the G-protein/2nd messenger system?

    <p>Closes the Na+ channels</p> Signup and view all the answers

    What happens when a person enters a dark room after being in the light, as per dark adaptation?

    <p>There are fewer photopigments in the rods and cones</p> Signup and view all the answers

    What is the typical ratio of cones to ganglion cells?

    <p>105:1</p> Signup and view all the answers

    In what condition does the convergence of rods onto a single ganglion cell increase light sensitivity?

    <p>Macular degeneration</p> Signup and view all the answers

    What is the main cause of blindness in people with age-related macular degeneration (AMD)?

    <p>Loss of retinal pigment epithelium</p> Signup and view all the answers

    What type of receptive fields do some ganglion cells have?

    <p>On-center fields and off-center fields</p> Signup and view all the answers

    Which specialized epithelium houses hair cells for detecting linear acceleration?

    <p>Macula</p> Signup and view all the answers

    What is embedded in the gelatinous otolithic membrane in the utricle and saccule?

    <p>Otoliths</p> Signup and view all the answers

    What eye movement is produced when a person's body is spinning?

    <p>Vestibular nystagmus</p> Signup and view all the answers

    Which condition is characterized by rotational vertigo, vestibular nystagmus, and tinnitus?

    <p>Meniere's disease</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser