Question 1

What are the semicircular canals?

Accepted Answer

A)  the point of the eye at which color vision is most acute
B)  the part of the eye that contains rods,cones,and bipolar cells
C)  the part of the inner ear that recognizes rotational equilibrium and movement
D)  the part of the choroid coat of the eye that is attached to the lens and the iris
E)  the internal part of the cochlea with hair cells that are stimulated by sound wavesF) A) and D)
G) C) and D)

Question 2

The molecules rhodopsin and retinal are involved in the sensory system that detects

Accepted Answer

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

Question 3

The sclera is continuous with the

Accepted Answer

A)  cornea.
B)  iris.
C)  retina.
D)  choroid coat.
E)  fovea centralis.F) A) and B)
G) C) and D)

Question 4

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) None of the above
F) B) and C)

Question 5

In the abnormal eyeball pictured here,the size of a normal eye is noted with a dotted line.This type of abnormality results in

Accepted Answer

A)  farsightedness.
B)  astigmatism.
C)  nearsightedness.
D)  cataracts.
E)  glaucoma.F) A) and B)
G) A) and C)

Question 6

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 B)
G) D) and E)

Question 7

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) B) and E)
G) A) and D) E

Question 8

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 above are true.F) A) and E)
G) D) and E)

Question 9

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) B) and D)
F) B) and C)

Question 10

Which of the following eye conditions is NOT treated with corrective lenses?

Accepted Answer

A)  farsightedness
B)  cataracts
C)  nearsightedness
D)  astigmatism
E)  nearsightedness and astigmatism are not treated with corrective lens.F) A) and C)
G) B) and C)

Question 11

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) B) and C)
G) A) and B) A

Question 12

If light rays are not focused evenly on the retina,a fuzzy image is formed.This condition is called

Accepted Answer

A)  nearsightedness.
B)  farsightedness.
C)  astigmatism.
D)  cataracts.
E)  conduction deafness.F) B) and E)
G) B) and D)

Question 13

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) All of the above
G) A) and D)

Question 14

Benign positional vertigo is due to

Accepted Answer

A)  the formation of particles in the semicircular canal.These particles will stimulate the steroeocilia producing a sensation of movement when there is actually no movement.
B)  the formation of particles in the semicircular canal resulting in an inner ear infection.
C)  the formation of particles in the cochlea.These particles will stimulate the steroeocilia producing a sensation of movement when there is actually no movement.
D)  the formation of particles in the malleus.These particles will stimulate the steroeocilia producing a sensation of movement when there is actually no movement.
E)  the calcification of the malleus producing a decrease in the conduction of sound.F) B) and D)
G) None of the above

Question 15

Which of the following lists of ear structures are all membranous structures?

Accepted Answer

A)  ossicles,tympanic membrane,oval window,otoliths
B)  cochlea,ampulla
C)  tympanic membrane,oval window,round window
D)  malleus,incus,stapes
E)  tympanic membrane,oval window,stapesF) B) and D)
G) A) and E) C

Question 16

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) B) and D)
G) B) and E)

Question 17

When you look at an image,it is inverted on the back of the retina and yet appears right-side-up when perceived in the brain.This change has occurred in

Accepted Answer

A)  the retina which integrates the visual image.
B)  the ganglionic cells.
C)  the rods and cones themselves.
D)  the visual regions of the brain.
E)  the lens.F) A) and B)
G) A) and C)

Question 18

Why do snakes flick their tongue when they see potential prey?

Accepted Answer

A)  They are trying to bring scent molecules into the mouth so the Jacobson's organs can decipher them.
B)  They are trying to detect the various scent molecules with their tongue.
C)  Snakes use tongue flicking as a means of communication.
D)  All of the choices are correct.E) B) and D)
F) B) and C)

Question 19

All of the following statements about sensory receptors are true EXCEPT

Accepted Answer

A)  sensory receptors monitor the internal environment of the body.
B)  chemoreception is believed to be a primitive sense in animals.
C)  sensory receptors for taste are found in the nose and mouth.
D)  the retina of the eye contains photoreceptors that are sensitive to light.
E)  photoreceptors include rod and cone cells.F) B) and D)
G) B) and C)

Question 20

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) B) and E)
G) A) and E)

Exam 38: Sense Organs

What are the semicircular canals?

Correct Answer
verified

The molecules rhodopsin and retinal are involved in the sensory system that detects

Correct Answer
verified

The sclera is continuous with the

Correct Answer
verified

The sense of smell is unique because it

Correct Answer
verified

In the abnormal eyeball pictured here,the size of a normal eye is noted with a dotted line.This type of abnormality results in

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified
E

Arthropods

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

Correct Answer
verified

Which of the following eye conditions is NOT treated with corrective lenses?

Correct Answer
verified

Which cutaneous receptors are sensitive to pressure?

Correct Answer
verified
A

If light rays are not focused evenly on the retina,a fuzzy image is formed.This condition is called

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

Benign positional vertigo is due to

Correct Answer
verified

Which of the following lists of ear structures are all membranous structures?

Correct Answer
verified
C

The ciliary muscle

Correct Answer
verified

When you look at an image,it is inverted on the back of the retina and yet appears right-side-up when perceived in the brain.This change has occurred in

Correct Answer
verified

Why do snakes flick their tongue when they see potential prey?

Correct Answer
verified

All of the following statements about sensory receptors are true EXCEPT

Correct Answer
verified

Which statement about smell receptors is NOT true?

Correct Answer
verified

Exam 38: Sense Organs

What are the semicircular canals?

Correct AnswerverifiedShow Answer

The molecules rhodopsin and retinal are involved in the sensory system that detects

Correct AnswerverifiedShow Answer

The sclera is continuous with the

Correct AnswerverifiedShow Answer

The sense of smell is unique because it

Correct AnswerverifiedShow Answer

In the abnormal eyeball pictured here,the size of a normal eye is noted with a dotted line.This type of abnormality results in

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedE

Arthropods

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

Which of the following eye conditions is NOT treated with corrective lenses?

Correct AnswerverifiedShow Answer

Which cutaneous receptors are sensitive to pressure?

Correct AnswerverifiedA

If light rays are not focused evenly on the retina,a fuzzy image is formed.This condition is called

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 AnswerverifiedShow Answer

Benign positional vertigo is due to

Correct AnswerverifiedShow Answer

Which of the following lists of ear structures are all membranous structures?

Correct AnswerverifiedC

The ciliary muscle

Correct AnswerverifiedShow Answer

When you look at an image,it is inverted on the back of the retina and yet appears right-side-up when perceived in the brain.This change has occurred in

Correct AnswerverifiedShow Answer

Why do snakes flick their tongue when they see potential prey?

Correct AnswerverifiedShow Answer

All of the following statements about sensory receptors are true EXCEPT

Correct AnswerverifiedShow Answer

Which statement about smell receptors is NOT true?

Correct AnswerverifiedShow Answer

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Correct Answer
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Correct Answer
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E

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A

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C

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