Eye Anatomy and Retinal Organization Quiz
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Questions and Answers

What is the function of a sensory receptor?

  • Controlling involuntary muscle movements
  • Maintaining homeostasis in the body
  • Monitoring conditions in the body or environment (correct)
  • Generating action potentials in motor neurons

Which of the following is considered a special sense?

  • Pressure
  • Touch
  • Equilibrium (correct)
  • Pain

What is the term for the conscious awareness of a sensation?

  • Adaptation
  • Perception (correct)
  • Stimulation
  • Sensation

Which type of sensory receptor only responds to a single type of stimuli?

<p>Phasic receptors (B)</p> Signup and view all the answers

What is the term for the area monitored by sensory receptors?

<p>Receptive field (D)</p> Signup and view all the answers

Which type of sensory adaptation involves a receptor altering its level of activity?

<p>Peripheral adaptation (D)</p> Signup and view all the answers

What is the outermost layer of the eye called?

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

Which type of photoreceptor is responsible for color vision?

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

What is the name of the small region at the center of the macula?

<p>Fovea (B)</p> Signup and view all the answers

Which cranial nerve carries visual information from the retina?

<p>Optic nerve (A)</p> Signup and view all the answers

What is the reason for each eye receiving slightly different images?

<p>The fovea are 2-3 inches apart (C)</p> Signup and view all the answers

What is the name of the structure where the optic nerves partially cross over?

<p>Optic chiasm (D)</p> Signup and view all the answers

Which of the following is NOT a component of the external ear?

<p>Auditory ossicles (D)</p> Signup and view all the answers

What is the primary function of the eustachian tube?

<p>To equilibrate pressure between the middle and outer ear (C)</p> Signup and view all the answers

Which part of the inner ear contains the sensory receptors for hearing?

<p>Cochlea (B)</p> Signup and view all the answers

What is the function of the tarsal glands associated with the eyelashes?

<p>To secrete a lipid substance that prevents lashes from sticking together (D)</p> Signup and view all the answers

What is the primary function of the conjunctiva?

<p>To cover the inner surface of the eyelids and outer surface of the eye (A)</p> Signup and view all the answers

Which of the following is NOT a component of the lacrimal apparatus?

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

What is the primary function of the retina?

<p>To convert light into electrical signals (C)</p> Signup and view all the answers

Which cranial nerve is primarily responsible for vision?

<p>Optic nerve (CN II) (D)</p> Signup and view all the answers

What is the primary function of the rods in the retina?

<p>Low-light vision (D)</p> Signup and view all the answers

Which part of the eye is responsible for focusing light onto the retina?

<p>Lens (D)</p> Signup and view all the answers

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