Question 1

Which statement about taste receptors is NOT true?

Accepted Answer

A)  Taste receptors are chemoreceptors.
B)  Taste receptors are located within taste buds in humans.
C)  Taste receptors are found only on the tongue in animals.
D)  Taste receptors recognize sweet,sour,bitter,salty and umami sensations.
E)  Taste receptors generate nerve impulses in associated sensory nerve fibers.F) A) and B)
G) A) and C)

Question 2

From what you currently know,in a spacecraft at a point of weightlessness,which effect is most likely?

Accepted Answer

A)  Rotational equilibrium would be lacking and you could not detect head movement.
B)  Gravitational equilibrium would be altered since the otoliths would not be pulled down by gravity.
C)  Without gravity,there would be no vertigo.
D)  All balance systems would work similar to being on Earth with normal gravity.
E)  There would be absolutely no sense of balance signals without gravity.F) None of the above
G) B) and D)

Question 3

What features are common to the eyes of Arthropods?

Accepted Answer

A)  have camera-type eyes.
B)  have eyespots that sense the direction and intensity of light.
C)  make use of a wider range of the electromagnetic spectrum than humans.
D)  have compound eyes composed of independent units called ommatidia.
E)  All of the answers are correct.F) C) and D)
G) A) and B)

Question 4

The crayfish has a cavity or "statocysts" lined with sensory setae or hairs.A grain in the cavity is pulled downward by gravity; the pressure against the bottom hairs of the cavity gives the crayfish a perception of being upright and,when it changes orientation,the grain touches side hairs that make it realize it is not upright.Thus,the crayfish "knows" which way is up in the dark.This sense is most closely related in function to the human sense of

Accepted Answer

A)  hot and cold.
B)  hearing.
C)  smell.
D)  sight.
E)  balance.F) A) and E)
G) D) and E)

Question 5

If a person were to suffer a second degree burn to their fingers,which group of receptors would suffer the greatest amount of damage?

Accepted Answer

A)  Meissner corpuscles
B)  Merkel disks
C)  Pacinian corpuscles
D)  Ruffini endingsE) None of the above
F) A) and C)

Question 6

Which statement about smell receptors is NOT true?

Accepted Answer

A)  They are chemoreceptors.
B)  They are located in the roof of the nasal cavity in humans.
C)  They send information to the brain by way of the olfactory bulb.
D)  They are capable of responding to pressure as well as chemical changes.
E)  They can detect some molecules better than others.F) None of the above
G) B) and E)

Question 7

The ciliary muscle

Accepted Answer

A)  is extremely sensitive to light and responsible for night vision.
B)  is the part of the eye that contains rods,cones,and bipolar cells.
C)  controls the shape of the lens to maintain a clear image of focus at various distances.
D)  is the part of the inner ear that recognizes rotational equilibrium.
E)  is the internal part of the cochlea with hair cells that are stimulated by sound waves.F) A) and C)
G) A) and D)

Question 8

The correct order in which a light ray reaches the retina is:

Accepted Answer

A)  cornea-vitreous humor-pupil-lens-aqueous humor-retina.
B)  lens-vitreous humor-cornea-aqueous humor-retina.
C)  lens-cornea-aqueous humor-vitreous humor-retina.
D)  cornea-aqueous humor-pupil-lens-vitreous humor-retina.
E)  lens-aqueous humor-cornea-vitreous humor-retina.F) A) and D)
G) C) and D)

Question 9

What is the aqueous humor?

Accepted Answer

A)  one of the fluids in the inner ear
B)  the fluid that surrounds the ossicles of the middle ear
C)  the fluid in the human eye between the cornea and the lens.
D)  the fluid in the eye between the retina and the lens
E)  the gel-like material in a cupula of a mechanoreceptorF) All of the above
G) A) and C)

Question 10

Which of the following statements about photoreceptors is NOT true?

Accepted Answer

A)  Image-forming eyes are found only in vertebrates.
B)  Photoreceptors differ in complexity in different kinds of animals.
C)  Eyespots in planaria allow the direction of light to be determined.
D)  The simplest photoreceptors only recognize the presence and intensity of light.
E)  A compound eye as seen in insects has many different visual units,each containing a lens.F) D) and E)
G) A) and B)

Question 11

Which of the following best describes sensory transduction?

Accepted Answer

A)  The conversion of a stimulus into a nerve impulse by using a receptor.
B)  The conversion of a nerve impulse into a stimulus by using a receptor.
C)  The detection of an environmental stimulus by a nerve receptor.
D)  The analysis of a nerve impulse by the brain.E) A) and B)
F) All of the above

Question 12

As people age,they often have trouble seeing near objects.This farsightedness is treated by

Accepted Answer

A)  radial keratotomy.
B)  an unevenly ground lens to compensate for an uneven cornea.
C)  cataract surgery.
D)  wearing concave lenses to refocus the image on the retina.
E)  wearing convex lenses to refocus the image on the retina.F) A) and E)
G) C) and E) E

Question 13

Which statement about chemoreceptors is NOT true?

Accepted Answer

A)  Chemoreceptors are universally found in animals.
B)  Chemoreceptors are found all over the body surface in humans.
C)  Chemoreceptors are concentrated on the auricles of the head in planaria.
D)  Chemoreceptors are found on antennae and mouthparts in insects and other arthropods.
E)  Chemoreceptors are thought to be the most primitive sensory receptor to have developed in animals.F) D) and E)
G) A) and B)

Question 14

If a fish suffers from a fungal skin infection that causes the cupula to become blocked,what will occur?

Accepted Answer

A)  Water will not be able to enter the cupula which would prevent the cilia from bending.If the cilia do not bend in response to the water it will not initiate a nerve impulse and the fish will lose the ability to detect nearby objects.
B)  Water will not be able to enter the cupula which would prevent the cilia from bending.If the cilia do not bend in response to the water it will over stimulate the nerve impulses and the fish will lose the ability to detect nearby objects.
C)  Water will not be able to enter the cupula which would prevent the cilia from bending.The fungal infection would then be allowed to enter into the bloodstream through the cupula.
D)  Water will not be able to enter the cupula which would prevent the cilia from maintaining its normal upright position.If the cilia do not stay upright it will not be able to initiate a nerve impulse and they will lose the ability to detect nearby objects.E) A) and B)
F) A) and C)

Question 15

Mail-order catalogs often advertise a device for repelling irritating insects.One device has a frequency range from 30,000 to 65,000 cycles per second (Hz) .Humans hear from roughly 50 to 15,000 cycles per second.In designing an experiment to determine if this device actually does repel a certain insect,what question(s) should you ask?

Accepted Answer

A)  Is the target insect able to perceive a sound between these frequencies?
B)  Does the insect approach this sound device at a rate higher than random chance?
C)  Does the insect move away from this sound device at a rate higher than random chance?
D)  Does the insect produce any sounds within this range that would lead to a biological function to perceiving such frequencies?
E)  All of the choices are correct.F) B) and C)
G) A) and E)

Question 16

There are more rods than cones but many rods may synapse with one ganglion cell while only one cone synapses with one ganglion.Therefore,when light intensity drops at night,we can expect a lit city street scene to be

Accepted Answer

A)  intense in color and very sharp.
B)  more black-and-white but very sharp.
C)  intense in color but grainy.
D)  more black-and-white and grainy.
E)  identical to the image formed of the street in daytime.F) A) and D)
G) A) and C) D

Question 17

An individual who works in construction and is exposed to years of loud noises,below 75 decibels,will most likely develop a decrease in hearing function.The structures that are damaged are the

Accepted Answer

A)  stereocilia of the spiral organ.
B)  organ of Corti.
C)  auditory canal.
D)  tympanic membrane.
E)  round window.F) B) and C)
G) None of the above A

Question 18

The sense of smell is unique because it

Accepted Answer

A)  may be associated with vivid memories.
B)  has direct connections to the limbic system and associated emotions.
C)  works in conjunction with the sense of taste to produce a combined smell-taste effect.
D)  All of the choices are correct.E) All of the above
F) C) and D)

Question 19

Which of the following structures function(s) to bend light rays?

Accepted Answer

A)  choroid
B)  rods and cones
C)  ciliary body
D)  lens and cornea
E)  iris and vitreous humorF) A) and B)
G) C) and D)

Question 20

Which cutaneous receptors are sensitive to pressure?

Accepted Answer

A)  Pacinian corpuscles and Ruffini endings
B)  Pacinian corpuscles and Meissner corpuscles
C)  Ruffini endings and Merkel disks
D)  Root hair plexus and Krause end bulbs
E)  Krause end bulbs and Merkel disksF) A) and E)
G) B) and E)

Exam 38: Sense Organs

Which statement about taste receptors is NOT true?

Correct Answer
verified

From what you currently know,in a spacecraft at a point of weightlessness,which effect is most likely?

Correct Answer
verified

What features are common to the eyes of Arthropods?

Correct Answer
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Correct Answer
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If a person were to suffer a second degree burn to their fingers,which group of receptors would suffer the greatest amount of damage?

Correct Answer
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Which statement about smell receptors is NOT true?

Correct Answer
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The ciliary muscle

Correct Answer
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The correct order in which a light ray reaches the retina is:

Correct Answer
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What is the aqueous humor?

Correct Answer
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Which of the following statements about photoreceptors is NOT true?

Correct Answer
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Which of the following best describes sensory transduction?

Correct Answer
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As people age,they often have trouble seeing near objects.This farsightedness is treated by

Correct Answer
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E

Which statement about chemoreceptors is NOT true?

Correct Answer
verified

If a fish suffers from a fungal skin infection that causes the cupula to become blocked,what will occur?

Correct Answer
verified

Correct Answer
verified

There are more rods than cones but many rods may synapse with one ganglion cell while only one cone synapses with one ganglion.Therefore,when light intensity drops at night,we can expect a lit city street scene to be

Correct Answer
verified
D

An individual who works in construction and is exposed to years of loud noises,below 75 decibels,will most likely develop a decrease in hearing function.The structures that are damaged are the

Correct Answer
verified
A

The sense of smell is unique because it

Correct Answer
verified

Which of the following structures function(s) to bend light rays?

Correct Answer
verified

Which cutaneous receptors are sensitive to pressure?

Correct Answer
verified

Exam 38: Sense Organs

Which statement about taste receptors is NOT true?

Correct AnswerverifiedShow Answer

From what you currently know,in a spacecraft at a point of weightlessness,which effect is most likely?

Correct AnswerverifiedShow Answer

What features are common to the eyes of Arthropods?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

If a person were to suffer a second degree burn to their fingers,which group of receptors would suffer the greatest amount of damage?

Correct AnswerverifiedShow Answer

Which statement about smell receptors is NOT true?

Correct AnswerverifiedShow Answer

The ciliary muscle

Correct AnswerverifiedShow Answer

The correct order in which a light ray reaches the retina is:

Correct AnswerverifiedShow Answer

What is the aqueous humor?

Correct AnswerverifiedShow Answer

Which of the following statements about photoreceptors is NOT true?

Correct AnswerverifiedShow Answer

Which of the following best describes sensory transduction?

Correct AnswerverifiedShow Answer

As people age,they often have trouble seeing near objects.This farsightedness is treated by

Correct AnswerverifiedE

Which statement about chemoreceptors is NOT true?

Correct AnswerverifiedShow Answer

If a fish suffers from a fungal skin infection that causes the cupula to become blocked,what will occur?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

There are more rods than cones but many rods may synapse with one ganglion cell while only one cone synapses with one ganglion.Therefore,when light intensity drops at night,we can expect a lit city street scene to be

Correct AnswerverifiedD

An individual who works in construction and is exposed to years of loud noises,below 75 decibels,will most likely develop a decrease in hearing function.The structures that are damaged are the

Correct AnswerverifiedA

The sense of smell is unique because it

Correct AnswerverifiedShow Answer

Which of the following structures function(s) to bend light rays?

Correct AnswerverifiedShow Answer

Which cutaneous receptors are sensitive to pressure?

Correct AnswerverifiedShow Answer

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E

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D

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A

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