Biomed 100 Practice Quiz
Chapter 10, Spring 2008
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Multiple Choice - One Correct Choice Per Question
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  1. What type of receptor is specialized to detect changes in pressure?
    1. photoreceptor
    2. chemoreceptor
    3. mechanoreceptor
    4. none of the above (there are no receptors that are specialzied to detect changes in pressure)

  2. A unique function of the _?_ is to "intensify" the vibrations passing through the middle ear.
    1. ossicles (ear bones)
    2. stapedius and tensor tympani (muscles of middle ear)
    3. cochlear duct
    4. auditory tube

  3. Given the following key:
    1 = incus ("anvil")
    2 = malleus ("hammer")
    3 = stapes ("stirrup")
    What is the correct sequence in the passage of vibrations through the middle ear?
    1. 1-2-3
    2. 1-3-2
    3. 2-1-3
    4. 2-3-1
    5. 3-2-1

  4. The receptors involved in hearing are commonly called
    1. ossicles
    2. hair cells
    3. ciliary bodies
    4. semicircular canals

  5. The receptors for the sense of equilibrium are located in the
    1. brain
    2. spinal cord
    3. middle ear cavity
    4. inner ear

  6. The "tympanic membrane" is a partition between the _?_ and the _?_.
    1. external ear and middle ear
    2. external ear and internal ear
    3. middle ear and internal ear
    4. middle ear and pharynx (throat)

  7. The auditory tube allows the pressure in the _?_ to equalize with the pressure of the atmosphere.
    1. cochlea
    2. middle ear cavity
    3. semicircular canals
    4. external auditory canal

  8. True or false? The cochlea and the semicircular canals are parts of a complex system of inner ear structures known as the "labyrinth."
    1. True.
    2. False.

  9. A part of the eye that has few cells and no blood vessels is the
    1. retina
    2. cornea
    3. ciliary body
    4. all of the above
    5. none of the above

  10. Accommodation for near vision is accomplished mainly by
    1. the lens becoming more "fat" and round
    2. the cornea becoming more "straightened out"
    3. the anterior (forward) movement of the retina
    4. constriction of the pupil

  11. Cones are most highly concentrated in the
    1. fovea centralis (central fovea) and the central part of the retina in general
    2. peripheral (outer) part of the retina
    3. optic disc
    4. choroid (middle) layer of the eye

  12. The convex curvature of the cornea makes it capable of
    1. refraction (bending light rays toward a point)
    2. limiting transmission of intense light into the eye
    3. adjusting the visual system to see distant objects
    4. all of the above
    5. none of the above

  13. The pupillary dilator and the pupillary constrictor are located in the
    1. iris
    2. pupil
    3. cornea
    4. ciliary body

  14. The ciliary muscle and suspensory ligaments control the shape of the
    1. cornea
    2. pupil
    3. lens
    4. retina