Biomed 100 Practice Quiz
Chapter 10, Fall 2006
Quizzes | Home
Multiple Choice - One Correct Choice Per Question
Roll mouse over choices to find best answer (it will "light up").
 Please do not click on any of the choices.
If you accidentally click, use your Backspace key or Back button to get back here.
  1. The function of photoreceptors is to detect and respond to changes in pressure, vibration, movement, etc.
    1. True.
    2. False.
      3.

  2. Two eye structures that are normally transparent are the _?_ and the _?_.
    1. lens and cornea
      2.
    2. cornea and sclera
    3. cornea and iris
    4. iris and lens
    5. lens and retina

  3. Accommodation for near vision (seeing a nearby object) involves mainly change in the shape of the...
    1. cornea
    2. iris
    3. pupil
    4. lens
      5.
    5. retina

  4. What is the function of the central fovea / macula lutea?
    1. responsible for major part of refraction of light entering eye
    2. responsible for adjusting degree of refraction (accommodation)
    3. via constriction/dilation, controls amount of light entering eye
    4. provides visual acuity (clear, detailed image)
      5.
    5. allows approximately 50% of axons to "cross over" to opposite side

  5. The photoreceptors known as rods...
    1. are concentrated in the central part of the retina
    2. occur in three types (red, green, blue)
    3. enable vision in a relatively dark environment
      4.
    4. do not share sensory neurons
    5. all of the above

  6. The muscles that may constrict or dilate the pupil are...
    1. located in the iris
      2.
    2. called the ciliary muscles
    3. attached to the suspensory ligament
    4. all of the above
    5. none of the above

  7. Approximately 50% of the axons in the visual pathway "cross over" to the opposite side in the _?_, which is located _?_.
    1. ciliary body / inside the eye
    2. ciliary body / outside the eye
    3. optic chiasma / inside the eye
    4. optic chiasma / outside the eye
      5.

  8. The retina of the eye...
    1. is the middle layer of the three layers.
    2. is the deepest layer of the three layers.
    3. contains photoreceptors.
    4. both A. and C.
    5. B. and C.
      6.

  9. Which one of the following is an ossicle ("ear bone") that is partially inserted into the oval window, which leads to the inner ear?
    1. stapedius
    2. tensor tympani
    3. incus (anvil)
    4. malleus (hammer)
    5. stapes (stirrup)
      6.

  10. What is the function of the auditory ossicles of the middle ear?
    1. provide framework for tympanic membrane (eardrum)
    2. equalize pressure between middle ear and pharynx (throat)
    3. equalize pressure between inner and outer surfaces of eardrum
    4. conduct and intensify vibrations passing through middle ear
      5.
    5. sense position and motion of head

  11. The spiral organ (organ of Corti) contains...
    1. auditory ossicles (ear bones)
    2. muscles that tense the auditory ossicles (ear bones)
    3. receptors (hair cells) for hearing
      4.
    4. receptors (hair cells) for equilibrium
    5. all of the above except D.

  12. If one's eyes are closed, rotation of the head can be detected by the...
    1. cochlea
    2. ossicles
    3. ciliary body
    4. central fovea
    5. semicircular canals
      6.

  13. The tympanic cavity is part of the _?_ and normally contains _?_.
    1. middle ear / air
      2.
    2. middle ear / fluid
    3. inner ear / air
    4. inner ear / fluid
    5. inner ear / bone tissue

  14. The auditory (Eustachian) tube is a passageway between the _?_ and the _?_.
    1. outer ear and middle ear
    2. middle ear and inner ear
    3. outer ear and inner ear
    4. middle ear and pharynx (throat)
      5.
    5. inner ear and pharynx (throat)

  15. Normally, the hair cells of the spiral organ (organ of Corti) generate electrical impulses when...
    1. bent by vibrations of the tympanic membrane (eardrum).
    2. bent by vibrations of the auditory ossicles.
    3. bent by vibrations of fluids and membranes in the inner ear.
      4.
    4. bent by movements of air passing through the auditory (Eustachian) tube.
    5. bent by movements of fluids resulting from tilt, rotation, or acceleration of the head