Question 1

As a male silkworm moth nears a female that is releasing pheromone,

Accepted Answer

A)  he can locate the female by following a concentration gradient of the pheromone. 
B)  the action potentials in his antennal nerve decrease. 
C)  fewer pheromone-sensitive hairs are stimulated per second. 
D)  the female starts to release more pheromone. 
E)  he switches from pheromone detection to hearing for locating the female. 
A)  he can locate the female by following a concentration gradient of the pheromone. 
B)  the action potentials in his antennal nerve decrease. 
C)  fewer pheromone-sensitive hairs are stimulated per second. 
D)  the female starts to release more pheromone. 
E)  he switches from pheromone detection to hearing for locating the female.

Question 2

Refer to the figure.   Identify the structures labeled 1, 2, 3, 4, and 5 in the figure, starting with 1 and ending with 5.

Accepted Answer

A)  Round window, oval window, cochlea, eustachian tube, tympanic membrane 
B)  Oval window, round window, tympanic membrane, cochlea, eustachian tube 
C)  Tympanic membrane, round window, oval window, cochlea, eustachian tube 
D)  Tympanic membrane, oval window, round window, eustachian tube, cochlea 
E)  Oval window, tympanic membrane, round window, eustachian tube, semicircular canal 
A)  Round window, oval window, cochlea, eustachian tube, tympanic membrane 
B)  Oval window, round window, tympanic membrane, cochlea, eustachian tube 
C)  Tympanic membrane, round window, oval window, cochlea, eustachian tube 
D)  Tympanic membrane, oval window, round window, eustachian tube, cochlea 
E)  Oval window, tympanic membrane, round window, eustachian tube, semicircular canal

Question 3

In a taste bud sensory cell, molecules bind to receptors on microvilli, which causes the release of neurotransmitter onto _______, which carry information to the central nervous system.

Accepted Answer

The answer of In a taste bud sensory cell, molecules...

Question 4

Glaucoma, often caused by increased pressure within the eye, damages the optic nerve and results in loss of vision.The cells damaged in glaucoma are _______ cells.

Accepted Answer

The answer of Glaucoma, often caused by increased pressure within...

Question 5

Which statement about color vision is false?

Accepted Answer

A)  The three types of cone cells in the human retina exhibit molecular differences in their retinal molecules. 
B)  The high number of cones in the fovea is associated with high-acuity vision. 
C)  Whereas the retinas of day-active mammals are rich in cones, those of nocturnal mammals are rich in rods. 
D)  The different rhodopsins in the human retina differ in the wavelengths of light they absorb best. 
E)  Nocturnal animals often have poor color vision. 
A)  The three types of cone cells in the human retina exhibit molecular differences in their retinal molecules. 
B)  The high number of cones in the fovea is associated with high-acuity vision. 
C)  Whereas the retinas of day-active mammals are rich in cones, those of nocturnal mammals are rich in rods. 
D)  The different rhodopsins in the human retina differ in the wavelengths of light they absorb best. 
E)  Nocturnal animals often have poor color vision.

Question 6

_______ arriving in the visual cortex of the brain are interpreted as light; in the auditory cortex, as sound; and in the olfactory cortex, as smell.

Accepted Answer

The answer of _______ arriving in the visual cortex of...

Question 7

Just before their transmission to the brain via the optic nerve, visual signals are processed by _______.

Accepted Answer

The answer of Just before their transmission to the brain...

Question 8

In a sensory receptor cell that does not fire action potentials, the intensity of the stimulus influences

Accepted Answer

A)  which neurotransmitter is released. 
B)  where the neurotransmitter is released. 
C)  which receptor proteins will bind the neurotransmitter. 
D)  how much neurotransmitter is released. 
E)  the number of neurotransmitters released. 
A)  which neurotransmitter is released. 
B)  where the neurotransmitter is released. 
C)  which receptor proteins will bind the neurotransmitter. 
D)  how much neurotransmitter is released. 
E)  the number of neurotransmitters released.

Question 9

In the retina of the vertebrate eye, the direct flow of information is from photoreceptor to _______ to ganglion cell

Accepted Answer

The answer of In the retina of the vertebrate eye,...

Question 10

Which statement about the differences between rods and cones is true?

Accepted Answer

A)  Cones are more sensitive to light intensity. 
B)  Rods are responsible for three wavelengths of color vision. 
C)  In the fovea, the density of rods is less than the density of cones. 
D)  Strictly nocturnal animals have more cones than rods. 
E)  There are more cones than rods in the human retina. 
A)  Cones are more sensitive to light intensity. 
B)  Rods are responsible for three wavelengths of color vision. 
C)  In the fovea, the density of rods is less than the density of cones. 
D)  Strictly nocturnal animals have more cones than rods. 
E)  There are more cones than rods in the human retina.

Question 11

Fishes have a lateral line system consisting of canals under the surface of the skin.These canals contain sensory structures consisting of hair cells capped by a cupula.These structures look similar to those found in our semicircular ducts.When a fish swims, a stream of water flows through the lateral line canals.The most likely function of the lateral line sensory system is to sense

Accepted Answer

A)  movements and pressure changes in the water. 
B)  the depth of the water. 
C)  chemical substances in the water. 
D)  electrical currents in the water. 
E)  spatial orientation based on gravity. 
A)  movements and pressure changes in the water. 
B)  the depth of the water. 
C)  chemical substances in the water. 
D)  electrical currents in the water. 
E)  spatial orientation based on gravity.

Question 12

Tigers hunt at night, so we would expect

Accepted Answer

A)  light not captured by photoreceptors to be absorbed. 
B)  their eyes to glow red when a bright light is shined on them. 
C)  their eyes to have an iridescent layer behind the retina that reflects light back onto photoreceptors. 
D)  slow processing of visual information. 
E)  the iris in each eye to constrict during hunting, making the pupil very small. 
A)  light not captured by photoreceptors to be absorbed. 
B)  their eyes to glow red when a bright light is shined on them. 
C)  their eyes to have an iridescent layer behind the retina that reflects light back onto photoreceptors. 
D)  slow processing of visual information. 
E)  the iris in each eye to constrict during hunting, making the pupil very small.

Question 13

_______ cells and amacrine cells are interneurons that communicate laterally across the retina.

Accepted Answer

The answer of _______ cells and amacrine cells are interneurons...

Question 14

An ice cube placed on your hand will cause some cells to fire action potentials more frequently and other cells to reduce the number fired.What explains the different responses?

Accepted Answer

A)  Thermoreceptors will detect the cold and slow down the rate of firing. 
B)  A pressure-sensitive channel will increase its firing rate due to the weight of the ice cube. 
C)  Some sensory cells will interpret the ice cube as painful and slow down their firing rate. 
D)  There are both warm- and cold-sensitive receptors in the skin. 
E)  Only the receptors that the ice cube actually touches will slow down their firing rate. 
A)  Thermoreceptors will detect the cold and slow down the rate of firing. 
B)  A pressure-sensitive channel will increase its firing rate due to the weight of the ice cube. 
C)  Some sensory cells will interpret the ice cube as painful and slow down their firing rate. 
D)  There are both warm- and cold-sensitive receptors in the skin. 
E)  Only the receptors that the ice cube actually touches will slow down their firing rate.

Question 15

A male silkworm moth locates a female at a distance by

Accepted Answer

A)  flying toward a chemical signal. 
B)  flying toward a sound signal. 
C)  flying toward anything shaped like a female moth. 
D)  emitting a sound as the female approaches. 
E)  emitting a chemical as the female approaches. 
A)  flying toward a chemical signal. 
B)  flying toward a sound signal. 
C)  flying toward anything shaped like a female moth. 
D)  emitting a sound as the female approaches. 
E)  emitting a chemical as the female approaches.

Question 16

Which statement about the eyes of arthropods is false?

Accepted Answer

A)  The number of ommatidia can vary by species. 
B)  High-resolution images are communicated to the central nervous system. 
C)  There is more than one optical unit per eye. 
D)  Arthropods have compound eyes. 
E)  Each optical unit has its own narrow-angle lens. 
A)  The number of ommatidia can vary by species. 
B)  High-resolution images are communicated to the central nervous system. 
C)  There is more than one optical unit per eye. 
D)  Arthropods have compound eyes. 
E)  Each optical unit has its own narrow-angle lens.

Question 17

Evaluate the following statement with respect to accuracy: A ganglion cell in the fovea receives input from many more photoreceptors than does a ganglion cell in the periphery of the retina.

Accepted Answer

The statement is incorrect. A ganglion c

Question 18

Hair cells are not associated with which of the following structures?

Accepted Answer

A)  Vestibular system 
B)  Organ of Corti 
C)  Cochlea 
D)  Muscle spindle 
E)  Semicircular canal 
A)  Vestibular system 
B)  Organ of Corti 
C)  Cochlea 
D)  Muscle spindle 
E)  Semicircular canal

Question 19

Which statement about photoreceptors of the human retina is false?

Accepted Answer

A)  Cone cells and rod cells differ in shape. 
B)  Rod cells are highly sensitive to light. 
C)  Cone cells provide high-acuity color vision. 
D)  The density of rods and cones varies across the retina. 
E)  Cones outnumber rods in the retina. 
A)  Cone cells and rod cells differ in shape. 
B)  Rod cells are highly sensitive to light. 
C)  Cone cells provide high-acuity color vision. 
D)  The density of rods and cones varies across the retina. 
E)  Cones outnumber rods in the retina.

Question 20

The particular sensations we perceive are determined by the

Accepted Answer

A)  frequency of action potentials. 
B)  degree of sensory adaptation. 
C)  type of action potential. 
D)  intensity of stimulation. 
E)  location in the brain that receives the action potentials. 
A)  frequency of action potentials. 
B)  degree of sensory adaptation. 
C)  type of action potential. 
D)  intensity of stimulation. 
E)  location in the brain that receives the action potentials.

Exam 45: Sensory Systems

As a male silkworm moth nears a female that is releasing pheromone,

Refer to the figure. Identify the structures labeled 1, 2, 3, 4, and 5 in the figure, starting with 1 and ending with 5.

In a taste bud sensory cell, molecules bind to receptors on microvilli, which causes the release of neurotransmitter onto _______, which carry information to the central nervous system.

Glaucoma, often caused by increased pressure within the eye, damages the optic nerve and results in loss of vision.The cells damaged in glaucoma are _______ cells.

Which statement about color vision is false?

_______ arriving in the visual cortex of the brain are interpreted as light; in the auditory cortex, as sound; and in the olfactory cortex, as smell.

Just before their transmission to the brain via the optic nerve, visual signals are processed by _______.

In a sensory receptor cell that does not fire action potentials, the intensity of the stimulus influences

In the retina of the vertebrate eye, the direct flow of information is from photoreceptor to _______ to ganglion cell

Which statement about the differences between rods and cones is true?

Tigers hunt at night, so we would expect

_______ cells and amacrine cells are interneurons that communicate laterally across the retina.

An ice cube placed on your hand will cause some cells to fire action potentials more frequently and other cells to reduce the number fired.What explains the different responses?

A male silkworm moth locates a female at a distance by

Which statement about the eyes of arthropods is false?

Evaluate the following statement with respect to accuracy: A ganglion cell in the fovea receives input from many more photoreceptors than does a ganglion cell in the periphery of the retina.

Hair cells are not associated with which of the following structures?

Which statement about photoreceptors of the human retina is false?

The particular sensations we perceive are determined by the

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