Question 1

According to the classification given by the authors, somatic senses

Accepted Answer

A)  are distributed in several locations over the body. 
B)  reside in certain receptor organs located at a few specific locations. 
C)  are exemplified by ears and eyes. 
D)  include sight and sound. 
E)  are perceived by photoreceptors. 
A)  are distributed in several locations over the body. 
B)  reside in certain receptor organs located at a few specific locations. 
C)  are exemplified by ears and eyes. 
D)  include sight and sound. 
E)  are perceived by photoreceptors. A

Question 2

When the frequency of nerve impulses slows or stops even when the stimulus continues at constant strength, the individual has undergone

Accepted Answer

A)  sensory adaptation. 
B)  tolerance. 
C)  perceptive degradation. 
D)  nerve damage. 
E)  tachyphylaxis. 
A)  sensory adaptation. 
B)  tolerance. 
C)  perceptive degradation. 
D)  nerve damage. 
E)  tachyphylaxis. A

Question 3

One's equilibrium is sensed by a

Accepted Answer

A)  chemoreceptor. 
B)  mechanoreceptor. 
C)  photoreceptor. 
D)  thermoreceptor. 
E)  osmoreceptor. 
A)  chemoreceptor. 
B)  mechanoreceptor. 
C)  photoreceptor. 
D)  thermoreceptor. 
E)  osmoreceptor. B

Question 4

An otolith is one of the functional parts of the

Accepted Answer

A)  eye. 
B)  Pacinian corpuscle. 
C)  vestibular apparatus. 
D)  taste bud. 
E)  pits, or heat-sensing devices, of snakes. 
A)  eye. 
B)  Pacinian corpuscle. 
C)  vestibular apparatus. 
D)  taste bud. 
E)  pits, or heat-sensing devices, of snakes.

Question 5

The organ of Corti is located in the

Accepted Answer

A)  thoracic cavity. 
B)  inner ear. 
C)  abdominal cavity. 
D)  brain stem. 
E)  semicircular canals. 
A)  thoracic cavity. 
B)  inner ear. 
C)  abdominal cavity. 
D)  brain stem. 
E)  semicircular canals.

Question 6

Cones

Accepted Answer

A)  detect coarse perception of movement. 
B)  detect very dim light. 
C)  detect changes in light intensity across the visual field in dark places. 
D)  contain disks packed with the visual pigment rhodopsin. 
E)  detect bright light. 
A)  detect coarse perception of movement. 
B)  detect very dim light. 
C)  detect changes in light intensity across the visual field in dark places. 
D)  contain disks packed with the visual pigment rhodopsin. 
E)  detect bright light.

Question 7

The reason that approximately one-third of adults in the United States will suffer significant hearing loss by age 65 is most likely

Accepted Answer

A)  frequent infections. 
B)  inborn structural problems. 
C)  head trauma. 
D)  excessive noise. 
E)  unknown causes. 
A)  frequent infections. 
B)  inborn structural problems. 
C)  head trauma. 
D)  excessive noise. 
E)  unknown causes.

Question 8

Selecting the Exception Four of the five answers listed below are parts of the same sense organ. Select the exception.

Accepted Answer

A)  choroid 
B)  retina 
C)  vitreous humor 
D)  ampulla 
E)  sclera 
A)  choroid 
B)  retina 
C)  vitreous humor 
D)  ampulla 
E)  sclera

Question 9

The most important receptors for steady touch are

Accepted Answer

A)  Pacinian corpuscles. 
B)  Meissner's corpuscles. 
C)  Merkel's discs. 
D)  Ruffini endings. 
E)  free nerve ending. 
A)  Pacinian corpuscles. 
B)  Meissner's corpuscles. 
C)  Merkel's discs. 
D)  Ruffini endings. 
E)  free nerve ending.

Question 10

If the ciliary muscle of the eye is damaged, then

Accepted Answer

A)  color vision will be lost. 
B)  the amount of light entering the eye cannot be regulated. 
C)  proper focusing will be impossible. 
D)  only peripheral vision is available. 
E)  "night blindness" will become more evident. 
A)  color vision will be lost. 
B)  the amount of light entering the eye cannot be regulated. 
C)  proper focusing will be impossible. 
D)  only peripheral vision is available. 
E)  "night blindness" will become more evident.

Question 11

The extent to which a particular sensation can be experienced is mainly due to the

Accepted Answer

A)  sensitivity of its receptors. 
B)  speed of nerve transmission. 
C)  brain area devoted to interpretation. 
D)  transmitter substances in the synapses. 
E)  amount of stimulus. 
A)  sensitivity of its receptors. 
B)  speed of nerve transmission. 
C)  brain area devoted to interpretation. 
D)  transmitter substances in the synapses. 
E)  amount of stimulus.

Question 12

Differences in intensity of a stimulus

Accepted Answer

A)  do not affect the impulse transmitted. 
B)  are indicated by the number of nerves activated. 
C)  control the part of the brain that receives the stimulus. 
D)  are encoded in the frequency of action potentials on a single axon. 
E)  are indicated by the number of nerves activated and are encoded in the frequency of action potentials on a single axon. 
A)  do not affect the impulse transmitted. 
B)  are indicated by the number of nerves activated. 
C)  control the part of the brain that receives the stimulus. 
D)  are encoded in the frequency of action potentials on a single axon. 
E)  are indicated by the number of nerves activated and are encoded in the frequency of action potentials on a single axon.

Question 13

Which of the following statements is true relating to sensory receptors in highly sensitive areas of the body?

Accepted Answer

A)  there are more receptors 
B)  there are fewer receptors 
C)  the receptors are larger 
D)  the receptors are totally different from those in less sensitive areas 
E)  the receptors are further away from one another. 
A)  there are more receptors 
B)  there are fewer receptors 
C)  the receptors are larger 
D)  the receptors are totally different from those in less sensitive areas 
E)  the receptors are further away from one another.

Question 14

The disease associated with the buildup of aqueous humor is

Accepted Answer

A)  astigmatism. 
B)  retinoblastoma. 
C)  myopia. 
D)  glaucoma. 
E)  cataracts. 
A)  astigmatism. 
B)  retinoblastoma. 
C)  myopia. 
D)  glaucoma. 
E)  cataracts.

Question 15

Blurred vision, flashes of light in the absence of outside stimulation and loss of peripheral vision are associated with

Accepted Answer

A)  astigmatism. 
B)  retinoblastoma. 
C)  retinal detachment. 
D)  glaucoma. 
E)  cataracts. 
A)  astigmatism. 
B)  retinoblastoma. 
C)  retinal detachment. 
D)  glaucoma. 
E)  cataracts.

Question 16

Which of the following may NOT be considered a tastant?

Accepted Answer

A)  salt 
B)  acids 
C)  plant alkaloids 
D)  sugars 
E)  umami 
A)  salt 
B)  acids 
C)  plant alkaloids 
D)  sugars 
E)  umami

Question 17

Which of the following BEST defines a sensory receptor?

Accepted Answer

A)  an organ, such as the human eye 
B)  endings of sensory neurons 
C)  highly branched endings of axons 
D)  any form of energy 
E)  an action potential 
A)  an organ, such as the human eye 
B)  endings of sensory neurons 
C)  highly branched endings of axons 
D)  any form of energy 
E)  an action potential

Question 18

Nociceptors are involved with the detection of

Accepted Answer

A)  heat energy. 
B)  changes in body position. 
C)  chemicals in the air or water. 
D)  pain. 
E)  visible light. 
A)  heat energy. 
B)  changes in body position. 
C)  chemicals in the air or water. 
D)  pain. 
E)  visible light.

Question 19

In nearsightedness,

Accepted Answer

A)  the sufferer cannot see things that are nearby. 
B)  distant objects are blurry because the image is focused in front of the retina. 
C)  the problem cannot be corrected by eyeglasses. 
D)  the image is focused behind the retina. 
E)  the retina begins to degenerate, making images fuzzy. 
A)  the sufferer cannot see things that are nearby. 
B)  distant objects are blurry because the image is focused in front of the retina. 
C)  the problem cannot be corrected by eyeglasses. 
D)  the image is focused behind the retina. 
E)  the retina begins to degenerate, making images fuzzy.

Question 20

Which characteristic of sound waves relates to loudness?

Accepted Answer

A)  amplitude 
B)  frequency 
C)  modulation 
D)  wavelength 
E)  pitch 
A)  amplitude 
B)  frequency 
C)  modulation 
D)  wavelength 
E)  pitch

Exam 14: Sensory Systems

According to the classification given by the authors, somatic senses

When the frequency of nerve impulses slows or stops even when the stimulus continues at constant strength, the individual has undergone

One's equilibrium is sensed by a

An otolith is one of the functional parts of the

The organ of Corti is located in the

Cones

The reason that approximately one-third of adults in the United States will suffer significant hearing loss by age 65 is most likely

Selecting the Exception Four of the five answers listed below are parts of the same sense organ. Select the exception.

The most important receptors for steady touch are

If the ciliary muscle of the eye is damaged, then

The extent to which a particular sensation can be experienced is mainly due to the

Differences in intensity of a stimulus

Which of the following statements is true relating to sensory receptors in highly sensitive areas of the body?

The disease associated with the buildup of aqueous humor is

Blurred vision, flashes of light in the absence of outside stimulation and loss of peripheral vision are associated with

Which of the following may NOT be considered a tastant?

Which of the following BEST defines a sensory receptor?

Nociceptors are involved with the detection of

In nearsightedness,

Which characteristic of sound waves relates to loudness?

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