Chapter 27
The Senses
Multiple Choice Questions
1. | Senses are divided into two groups: general and special. Receptors for the special senses are limited to the
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2. | What sense is not one of the special senses?
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3. | Receptors for the general senses are
C. | found only in the brain and spinal cord. |
D. | found throughout the body. |
E. | found only on the surface of the body. |
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4. | In humans, which receptor is used primarily to detect light?
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5. | If you wanted to design a drug to stop the sense of smell, what kind of receptor would you target?
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6. | In humans, which receptor is used to primarily detect heat?
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7. | In humans, which receptor is used primarily to detect sharp blows and excessive heat?
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8. | Which type of receptor detects the location of limbs, head, and other body parts?
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9. | You are swimming in a pool and feel the waves of water moving against your body. Which receptor is used to detect the pressure associated with the waves against your body?
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10. | A phenomenon in which sensations become less noticeable with prolonged exposure is called
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11. | Tasting dissolved sugar molecules from ice cream is detected by
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12. | If a person has a genetic mutation which renders them incapable of making chemoreceptors, which sense would be affected?
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13. | Which of the following is an example of a special sense?
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14. | Olfaction is another name for the sense of
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15. | Volatile chemical substances that elicit specific responses in other members of the same species are referred to as
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16. | The light-sensitive pigment found in animals' eyes is called
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17. | A developmental defect in the eye which prevents light from entering the eye but does not involve the lens would be a defect in the
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18. | The part of the eye that focuses light onto a sheet of photoreceptors is the
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19. | If you had a friend who was unable to see color, you would expect that your friend's eyes had defective
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20. | The point where the optic nerve exits the retina and lacks photoreceptors is called the
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21. | If a person has been prescribed eyeglasses with lenses that shorten the path of light, the correction is for
E. | None of the answer choices is correct. |
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22. | The snail-shaped _______________ transduces sound into nerve impulses.
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23. | The senses of equilibrium and balance derive from the
D. | cochlea and vestibule. |
E. | semicircular canals and vestibule. |
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24. | Which nerve was cut if a patient loses hearing during an accident that resulted in a severed nerve?
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25. | A subject in a physiological experiment who has been listening to loud noise for 5 minutes reports noticing the noise less over time. The nerve most involved in this sensory adaptation is the
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True / False Questions
26. | The same mechanoreceptors control the inner ear for balance and for hearing.
True False |
Multiple Choice Questions
| You are lying on a sand dune looking over the water, listening to the waves, and enjoying the feel of the sun and wind on your skin. You sit up quickly and feel momentarily dizzy. |
27. | If you lose your sensitivity to the sound of the waves but still notice a seagull flying above you, what is happening?
A. | sensory adaptation in sight involving thermoreceptors |
B. | sensory adaptation in sight and hearing involving mechanoreceptors |
C. | competition between processing of hearing and sight involving light receptors |
D. | sensory adaptation in hearing involving mechanoreceptors |
E. | general sensory diminution involving mechanoreceptors and thermoreceptors |
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28. | The sound of the waves is detected by
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29. | The dizzy feeling you encounter when you sit up is being activated by the
A. | thermoreceptor in your ear lobe. |
B. | photoreceptor in the skin. |
C. | mechanoreceptor in the vestibular apparatus. |
D. | proprioceptor in the cochlea. |
E. | chemoreceptor in the ear drum. |
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30. | Which of the following describes the function of the simple cup-shaped eyes found in flatworms?
A. | They can see structures. |
C. | They have depth perception. |
D. | They can detect light and shadows. |
E. | They have lenses that regulate the amount of light. |
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True / False Questions
31. | Insects have compound eyes.
True False |
32. | In humans, taste buds are most highly concentrated on the inside surface of the lips of the mouth.
True False |
33. | Sensory adaptation occurs when perception of one sense declines due to repeated stimulation.
True False |
34. | The rods and cones in the retina transduce light energy into action potentials, which can then travel to the brain for processing.
True False |
35. | Rod cells allow us to see at night and provide black and white vision.
True False |
36. | The brain determines loudness of a sound by the number of neurons that are firing and the rate at which they fire.
True False |
37. | All animal eyes have a macula.
True False |
Multiple Choice Questions
38. | Researchers Feng and Zhao discovered premature stop codons in the T1R gene in Toothed and Baleen whales. How would a premature stop codon affect this protein?
A. | The protein will be partially synthesized and will function incorrectly. |
B. | The protein would be synthesized completely intact and function properly. |
C. | The protein would be synthesized completely intact but function incorrectly. |
D. | The protein will be partially synthesized and function correctly. |
E. | The gene for the protein would no longer be found in the genome. |
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True / False Questions
39. | The T1R genes for umami and sweet are intact in dogs and cows and nonfunctional in Toothed and Baleen whales.
True False |