Question 1

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 C)
G) A) and E)

Question 2

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) B) and E)
G) None of the above

Question 3

Since chemoreceptors are found in arthropods, crustaceans, vertebrates and all other animals it is believed that chemoreception is the most primitive sense.

Accepted Answer

A) True 
 B)False

Question 4

The actual physiological mechanism that allows fish to school involves both the cutaneous receptors known as the lateral line as well as their eyesight. Therefore, the stimuli that fish use to school are light and

Accepted Answer

A)   pressure waves.
B)   temperature.
C)   sound waves.
D)   gravitational pull.
E)   molecules for taste.F) A) and D)
G) A) and B)

Question 5

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

Question 6

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) None of the above
G) C) and D)

Question 7

Identify and briefly describe the function of the labeled structures in the human eye pictured here.  
A:
B:
C:
D:
E:
F:
G:
H:
I:
J:

Accepted Answer

A: Sclera: protects and supports the eye...

Question 8

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) A) and C)
G) A) and E)

Question 9

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

Question 10

The organ of Corti consists of the

Accepted Answer

A)   hammer, anvil, and stirrup.
B)   eardrum, round window, and oval window.
C)   hair cells and tectorial membrane.
D)   saccule, utricle, and cochlea.
E)   cochlea and auditory nerve.F) None of the above
G) A) and B)

Question 11

Glaucoma is caused by an increase in intraocular pressure due to inadequate drainage of the

Accepted Answer

A)   vitreous humor.
B)   aqueous humor.
C)   venous blood.
D)   cochlear duct.
E)   ampulla.F) C) and D)
G) A) and B)

Question 12

What kind of receptors are involved in hearing?

Accepted Answer

A)   chemoreceptors
B)   photoreceptors
C)   pain receptors
D)   mechanoreceptors
E)   interoceptorsF) D) and E)
G) C) and E)

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) B) and C)

Question 14

When the cerebral cortex interprets the sense of taste it will also be interpreting the sense of smell.

Accepted Answer

A) True 
 B)False

Question 15

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 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) A) and D)
G) C) and D)

Question 16

Which of the following visual association with its related cause is NOT correct?

Accepted Answer

A)   color blindness - lack of red or green cones
B)   eyestrain - muscle fatigue from constant contraction of the ciliary muscle
C)   cataracts - lens becomes opaque with aging and sun exposure
D)   nearsighted - unable to see near objects in detailE) B) and D)
F) B) and C)

Exam 38: Sense Organs

Glaucoma is caused by an increase in intraocular pressure due to inadequate drainage of the

Correct Answer
verified

What kind of receptors are involved in hearing?

Correct Answer
verified

Which of the following visual association with its related cause is NOT correct?

Correct Answer
verified

Which of the following statements about photoreceptors is NOT true?

Correct Answer
verified

Which statement about smell receptors is NOT true?

Correct Answer
verified

What is the aqueous humor?

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

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

Correct Answer
verified

The actual physiological mechanism that allows fish to school involves both the cutaneous receptors known as the lateral line as well as their eyesight. Therefore, the stimuli that fish use to school are light and

Correct Answer
verified

Which statement about chemoreceptors is NOT true?

Correct Answer
verified

Identify and briefly describe the function of the labeled structures in the human eye pictured here. A: B: C: D: E: F: G: H: I: J:

Correct Answer
verified
A: Sclera: protects and supports the eye...
View Answer

When the cerebral cortex interprets the sense of taste it will also be interpreting the sense of smell.

Correct Answer
verified

Since chemoreceptors are found in arthropods, crustaceans, vertebrates and all other animals it is believed that chemoreception is the most primitive sense.

Correct Answer
verified

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

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

The organ of Corti consists of the

Correct Answer
verified

Exam 38: Sense Organs

Glaucoma is caused by an increase in intraocular pressure due to inadequate drainage of the

Correct AnswerverifiedShow Answer

What kind of receptors are involved in hearing?

Correct AnswerverifiedShow Answer

Which of the following visual association with its related cause is NOT correct?

Correct AnswerverifiedShow Answer

Which of the following statements about photoreceptors is NOT true?

Correct AnswerverifiedShow Answer

Which statement about smell receptors is NOT true?

Correct AnswerverifiedShow Answer

What is the aqueous humor?

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

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

Correct AnswerverifiedShow Answer

The actual physiological mechanism that allows fish to school involves both the cutaneous receptors known as the lateral line as well as their eyesight. Therefore, the stimuli that fish use to school are light and

Correct AnswerverifiedShow Answer

Which statement about chemoreceptors is NOT true?

Correct AnswerverifiedShow Answer

Identify and briefly describe the function of the labeled structures in the human eye pictured here. A: B: C: D: E: F: G: H: I: J:

Correct AnswerverifiedA: Sclera: protects and supports the eye...View AnswerShow Answer

When the cerebral cortex interprets the sense of taste it will also be interpreting the sense of smell.

Correct AnswerverifiedShow Answer

Since chemoreceptors are found in arthropods, crustaceans, vertebrates and all other animals it is believed that chemoreception is the most primitive sense.

Correct AnswerverifiedShow Answer

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

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

The organ of Corti consists of the

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A: Sclera: protects and supports the eye...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified