Question 1

Meissner's corpuscles

Accepted Answer

A)  adapt very slowly. 
B)  are present uniformly on skin surfaces. 
C)  sense deep pressure. 
D)  have concentric layers of connective tissue. 
E)  sense light touch. 
A)  adapt very slowly. 
B)  are present uniformly on skin surfaces. 
C)  sense deep pressure. 
D)  have concentric layers of connective tissue. 
E)  sense light touch.

Question 2

Which statement accurately describes the relationship between photoreceptors and ganglion cells?

Accepted Answer

A)  Ganglion cells are located behind photoreceptors, at the back of the retina. 
B)  Ganglion cells in the fovea receive input from fewer photoreceptors than do ganglion cells in the periphery of the retina. 
C)  Ganglion cells are connected to photoreceptors by horizontal cells. 
D)  The direct flow of information in the retina is from ganglion cell to bipolar cell to photoreceptor. 
E)  In the human retina, ganglion cells far outnumber photoreceptors. 
A)  Ganglion cells are located behind photoreceptors, at the back of the retina. 
B)  Ganglion cells in the fovea receive input from fewer photoreceptors than do ganglion cells in the periphery of the retina. 
C)  Ganglion cells are connected to photoreceptors by horizontal cells. 
D)  The direct flow of information in the retina is from ganglion cell to bipolar cell to photoreceptor. 
E)  In the human retina, ganglion cells far outnumber photoreceptors.

Question 3

Evaluate the following statement with respect to accuracy: Although the receptors of taste buds vary in the mechanism of taste transduction, they all release neurotransmitter onto sensory neurons, which carry the information to the central nervous system.

Accepted Answer

The statement is correct. Some

Question 4

_______ are cells of the nervous system that transduce physical or chemical stimuli into receptor potentials, which generate action potentials for transmission to other parts of the nervous system for processing and interpretation.

Accepted Answer

A)  Receptor proteins 
B)  Effectors 
C)  Glial cells 
D)  Ion channels 
E)  Sensory receptor cells 
A)  Receptor proteins 
B)  Effectors 
C)  Glial cells 
D)  Ion channels 
E)  Sensory receptor cells

Question 5

Destruction of the accessory olfactory bulbs of a rat would cause which of the following outcomes?

Accepted Answer

A)  Inability to integrate information from the vomeronasal organ 
B)  Delays in finding food 
C)  Inability to integrate information from the main olfactory system 
D)  Inability to detect predators 
E)  Enhanced ability to detect pheromones 
A)  Inability to integrate information from the vomeronasal organ 
B)  Delays in finding food 
C)  Inability to integrate information from the main olfactory system 
D)  Inability to detect predators 
E)  Enhanced ability to detect pheromones

Question 6

In diurnal animals, what feature of the eye prevents too much light from overstimulating the retina?

Accepted Answer

A)  The fovea is small and therefore the retina contains fewer cones 
B)  Diurnal animal eyes possess a great number of rods 
C)  Less rhodopsin is produced to absorb photons 
D)  The black pigment behind the retina absorbs extra light 
E)  The white reflective layer behind the retina reflects light 
A)  The fovea is small and therefore the retina contains fewer cones 
B)  Diurnal animal eyes possess a great number of rods 
C)  Less rhodopsin is produced to absorb photons 
D)  The black pigment behind the retina absorbs extra light 
E)  The white reflective layer behind the retina reflects light

Question 7

Which of the following does not characterize visual accommodation in mammals?

Accepted Answer

A)  It involves relaxation of ciliary muscles for distant vision. 
B)  It is accomplished by altering the shape of the lens. 
C)  It involves contraction of ciliary muscles for near vision. 
D)  It involves movement of the lens forward and backward. 
E)  It differs from accommodation in fishes and amphibians. 
A)  It involves relaxation of ciliary muscles for distant vision. 
B)  It is accomplished by altering the shape of the lens. 
C)  It involves contraction of ciliary muscles for near vision. 
D)  It involves movement of the lens forward and backward. 
E)  It differs from accommodation in fishes and amphibians.

Question 8

Surgical removal of the vomeronasal organ in a male mouse would directly influence all of the following abilities except

Accepted Answer

A)  identification of the strain of another mouse. 
B)  identification of the sex of another mouse. 
C)  assessment of the sexual receptivity of a female mouse. 
D)  detection of an individual of another rodent species nearby. 
E)  identification of a particular conspecific. 
A)  identification of the strain of another mouse. 
B)  identification of the sex of another mouse. 
C)  assessment of the sexual receptivity of a female mouse. 
D)  detection of an individual of another rodent species nearby. 
E)  identification of a particular conspecific.

Question 9

Smelling a flower activates

Accepted Answer

A)  a temperature-sensitive cation channel. 
B)  the opening of a pressure-sensitive cation channel. 
C)  a G protein signaling cascade. 
D)  an action potential due to ion flow through electroreceptors. 
E)  an action potential due to ion flow through a mechanoreceptor. 
A)  a temperature-sensitive cation channel. 
B)  the opening of a pressure-sensitive cation channel. 
C)  a G protein signaling cascade. 
D)  an action potential due to ion flow through electroreceptors. 
E)  an action potential due to ion flow through a mechanoreceptor.

Question 10

Which of the following does not characterize Merkel's discs?

Accepted Answer

A)  They respond to touch. 
B)  They are found primarily in the epidermis. 
C)  They are found in hairy and non-hairy skin. 
D)  They adapt slowly. 
E)  They provide continuous information about objects touching the skin. 
A)  They respond to touch. 
B)  They are found primarily in the epidermis. 
C)  They are found in hairy and non-hairy skin. 
D)  They adapt slowly. 
E)  They provide continuous information about objects touching the skin.

Question 11

Horizontal and amacrine cells differ from ganglion and bipolar cells in that they

Accepted Answer

A)  are not involved in visual processing. 
B)  have axons that form the optic nerves. 
C)  occur behind the photoreceptors. 
D)  communicate laterally across the retina. 
E)  form a circular receptive field. 
A)  are not involved in visual processing. 
B)  have axons that form the optic nerves. 
C)  occur behind the photoreceptors. 
D)  communicate laterally across the retina. 
E)  form a circular receptive field.

Question 12

Cells of the nervous system that transduce physical or chemical stimuli into signals that are transmitted to other parts of the nervous system are _______ cells.

Accepted Answer

A)  glial 
B)  sensory receptor 
C)  axonal 
D)  messenger 
E)  motor 
A)  glial 
B)  sensory receptor 
C)  axonal 
D)  messenger 
E)  motor

Question 13

Vertigo is a condition in which a person feels like she or he is spinning.Which structure is a likely location for the viral infection that often causes vertigo?

Accepted Answer

A)  Eustachian tube 
B)  Cochlea 
C)  Vestibular system 
D)  Oval window 
E)  Tympanic membrane 
A)  Eustachian tube 
B)  Cochlea 
C)  Vestibular system 
D)  Oval window 
E)  Tympanic membrane

Question 14

The ear can distinguish different sound frequencies because different parts of the _______ respond differentially.

Accepted Answer

A)  tympanic membrane 
B)  round window 
C)  oval window 
D)  tectorial membrane 
E)  basilar membrane 
A)  tympanic membrane 
B)  round window 
C)  oval window 
D)  tectorial membrane 
E)  basilar membrane

Question 15

Color blindness results from a

Accepted Answer

A)  dysfunction in one or more classes of cone cells. 
B)  deficiency in rhodopsin. 
C)  mutation that affects the ganglion cell layer. 
D)  deficiency of cone cells. 
E)  mutation that affects the pigmented epithelium. 
A)  dysfunction in one or more classes of cone cells. 
B)  deficiency in rhodopsin. 
C)  mutation that affects the ganglion cell layer. 
D)  deficiency of cone cells. 
E)  mutation that affects the pigmented epithelium.

Question 16

Which of the following does not characterize the eyes of arthropods?

Accepted Answer

A)  They contain multiple ommatidia per eye. 
B)  They provide information about patterns in the environment. 
C)  They provide high-resolution images. 
D)  They are more complex than the eyes of flatworms. 
E)  They have a narrow-angle lens associated with each optical unit. 
A)  They contain multiple ommatidia per eye. 
B)  They provide information about patterns in the environment. 
C)  They provide high-resolution images. 
D)  They are more complex than the eyes of flatworms. 
E)  They have a narrow-angle lens associated with each optical unit.

Question 17

Which structure of the mammalian auditory system is responsible for transmitting pressure signals between two flexible membranes?

Accepted Answer

A)  Organ of Corti 
B)  Ear ossicles 
C)  Oval window 
D)  Eustachian tube 
E)  Round window 
A)  Organ of Corti 
B)  Ear ossicles 
C)  Oval window 
D)  Eustachian tube 
E)  Round window

Question 18

Sensory _______ allows animals to ignore conditions that are unchanging yet remain sensitive to new information.

Accepted Answer

A)  transduction 
B)  deprivation 
C)  adaptation 
D)  stimulation 
E)  processing 
A)  transduction 
B)  deprivation 
C)  adaptation 
D)  stimulation 
E)  processing

Question 19

Some prescription drugs have the side effect of interfering with the senses of taste and smell.One explanation for this side effect is that these drugs may

Accepted Answer

A)  bind to chemoreceptors in the nasal cavity and tongue. 
B)  inactivate an electroreceptor. 
C)  diminish the stretch response. 
D)  chemically block a pressure-sensitive cation channel. 
E)  increase the activity of thermoreceptors. 
A)  bind to chemoreceptors in the nasal cavity and tongue. 
B)  inactivate an electroreceptor. 
C)  diminish the stretch response. 
D)  chemically block a pressure-sensitive cation channel. 
E)  increase the activity of thermoreceptors.

Question 20

Pacinian corpuscles

Accepted Answer

A)  are found just below the epidermis. 
B)  respond to extended, steady pressure. 
C)  adapt rapidly and provide information about high-frequency vibrating stimuli. 
D)  have long, extensive dendritic processes. 
E)  are extremely sensitive to light touch. 
A)  are found just below the epidermis. 
B)  respond to extended, steady pressure. 
C)  adapt rapidly and provide information about high-frequency vibrating stimuli. 
D)  have long, extensive dendritic processes. 
E)  are extremely sensitive to light touch.

Exam 45: Sensory Systems

Meissner's corpuscles

Which statement accurately describes the relationship between photoreceptors and ganglion cells?

Evaluate the following statement with respect to accuracy: Although the receptors of taste buds vary in the mechanism of taste transduction, they all release neurotransmitter onto sensory neurons, which carry the information to the central nervous system.

_______ are cells of the nervous system that transduce physical or chemical stimuli into receptor potentials, which generate action potentials for transmission to other parts of the nervous system for processing and interpretation.

Destruction of the accessory olfactory bulbs of a rat would cause which of the following outcomes?

In diurnal animals, what feature of the eye prevents too much light from overstimulating the retina?

Which of the following does not characterize visual accommodation in mammals?

Surgical removal of the vomeronasal organ in a male mouse would directly influence all of the following abilities except

Smelling a flower activates

Which of the following does not characterize Merkel's discs?

Horizontal and amacrine cells differ from ganglion and bipolar cells in that they

Cells of the nervous system that transduce physical or chemical stimuli into signals that are transmitted to other parts of the nervous system are _______ cells.

Vertigo is a condition in which a person feels like she or he is spinning.Which structure is a likely location for the viral infection that often causes vertigo?

The ear can distinguish different sound frequencies because different parts of the _______ respond differentially.

Color blindness results from a

Which of the following does not characterize the eyes of arthropods?

Which structure of the mammalian auditory system is responsible for transmitting pressure signals between two flexible membranes?

Sensory _______ allows animals to ignore conditions that are unchanging yet remain sensitive to new information.

Some prescription drugs have the side effect of interfering with the senses of taste and smell.One explanation for this side effect is that these drugs may

Pacinian corpuscles

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