Question 1

The greatest concentration of cones is in the fovea centralis of the retina.

Accepted Answer

A) True 
 B)False  True

Question 2

When light strikes photoreceptors

Accepted Answer

A) The chromophore retinal undergoes a change of shape 
B) There is a decrease in neurotransmitter release from the photoreceptors 
C) The photoreceptors become depolarized 
D) Both the chromophore retinal undergoes a change of shape and there is a decrease in neurotransmitter release from the photoreceptors are correct 
E) All of the choices are correct 
A) The chromophore retinal undergoes a change of shape 
B) There is a decrease in neurotransmitter release from the photoreceptors 
C) The photoreceptors become depolarized 
D) Both the chromophore retinal undergoes a change of shape and there is a decrease in neurotransmitter release from the photoreceptors are correct 
E) All of the choices are correct D

Question 3

The receptors for hearing are found on the

Accepted Answer

A) Tympanic membrane 
B) Basilar membrane 
C) Stapes 
D) Oval window 
E) Scala vestibuli 
A) Tympanic membrane 
B) Basilar membrane 
C) Stapes 
D) Oval window 
E) Scala vestibuli B

Question 4

Regarding the ascending pathways in the sensory system,

Accepted Answer

A) Specific pathways for all sensory information ultimately synapse in the cerebral cortex 
B) Specific pathways for all sensory information ultimately synapse in the somatosensory cortex 
C) Specific pathways for olfaction ultimately synapse in the limbic system 
D) Both specific pathways for all sensory information ultimately synapse in the cerebral cortex and specific pathways for olfaction ultimately synapse in the limbic system are correct 
E) Both specific pathways for all sensory information ultimately synapse in the somatosensory cortex and specific pathways for olfaction ultimately synapse in the limbic system are correct 
A) Specific pathways for all sensory information ultimately synapse in the cerebral cortex 
B) Specific pathways for all sensory information ultimately synapse in the somatosensory cortex 
C) Specific pathways for olfaction ultimately synapse in the limbic system 
D) Both specific pathways for all sensory information ultimately synapse in the cerebral cortex and specific pathways for olfaction ultimately synapse in the limbic system are correct 
E) Both specific pathways for all sensory information ultimately synapse in the somatosensory cortex and specific pathways for olfaction ultimately synapse in the limbic system are correct

Question 5

The plasma membranes of rod and cone cells are

Accepted Answer

A) At their resting potential in the dark and depolarized in the light 
B) At their resting potential in the dark and hyperpolarized in the light 
C) Depolarized in the dark and hyperpolarized in the light 
D) Hyperpolarized in the dark and at their resting potential in the light 
E) Hyperpolarized in the dark and depolarized in the light 
A) At their resting potential in the dark and depolarized in the light 
B) At their resting potential in the dark and hyperpolarized in the light 
C) Depolarized in the dark and hyperpolarized in the light 
D) Hyperpolarized in the dark and at their resting potential in the light 
E) Hyperpolarized in the dark and depolarized in the light

Question 6

Which of the following statements regarding vision is false?

Accepted Answer

A) The cornea plays a larger role than the lens in focusing light on the retina 
B) Presbyopia is a condition in which the lens cannot accommodate adequately for near vision 
C) Myopia is a condition in which the lens focuses light from distant objects behind the retina 
D) Cataract results from an increase in opacity (clouding) of the lens 
E) The image of an object that is focused on the retina is upside down relative to the object's actual position in space 
A) The cornea plays a larger role than the lens in focusing light on the retina 
B) Presbyopia is a condition in which the lens cannot accommodate adequately for near vision 
C) Myopia is a condition in which the lens focuses light from distant objects behind the retina 
D) Cataract results from an increase in opacity (clouding) of the lens 
E) The image of an object that is focused on the retina is upside down relative to the object's actual position in space

Question 7

Perceptions are derived from higher-order processing of sensory information.

Accepted Answer

A) True 
 B)False

Question 8

In both ON and OFF visual pathways,light stimulates the release of glutamate onto bipolar cells.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following statements regarding the perception of pain is true?

Accepted Answer

A) Substance P is an important neurotransmitter in specific pain pathways 
B) Transmission of information in the pain pathway may be inhibited by activation of neurons that synthesize endorphins 
C) Synaptic activity in afferent neurons associated with pain receptors can be inhibited by axon-axon synapses with neurons from descending pathways 
D) Both substance P is an important neurotransmitter in specific pain pathways and transmission of information in the pain pathway may be inhibited by activation of neurons that synthesize endorphins are true 
E) All of the choices are true 
A) Substance P is an important neurotransmitter in specific pain pathways 
B) Transmission of information in the pain pathway may be inhibited by activation of neurons that synthesize endorphins 
C) Synaptic activity in afferent neurons associated with pain receptors can be inhibited by axon-axon synapses with neurons from descending pathways 
D) Both substance P is an important neurotransmitter in specific pain pathways and transmission of information in the pain pathway may be inhibited by activation of neurons that synthesize endorphins are true 
E) All of the choices are true

Question 10

The conscious sensation of sight is a result of integration of information that is processed by cortical areas of the occipital,temporal,parietal and frontal lobes of the brain.

Accepted Answer

A) True 
 B)False

Question 11

The density of receptors in a receptive field is usually greatest in the periphery of the field.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following statements regarding sensory pathways is correct?

Accepted Answer

A) All somatic sensory information that reaches the cerebral cortex is first processed in the thalamus 
B) Somatic sensory information from the left side of the body is projected to the left side of the somatosensory cortex 
C) All somatic sensory information travels together in a single tract in the spinal cord 
D) Stimulation of any neuron in a specific ascending pathway will convey information about only one stimulus type 
E) None of the choices are correct 
A) All somatic sensory information that reaches the cerebral cortex is first processed in the thalamus 
B) Somatic sensory information from the left side of the body is projected to the left side of the somatosensory cortex 
C) All somatic sensory information travels together in a single tract in the spinal cord 
D) Stimulation of any neuron in a specific ascending pathway will convey information about only one stimulus type 
E) None of the choices are correct

Question 13

The tympanic membrane separates an air-filled chamber from a fluid-filled chamber.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following statements related to "ON pathways" and "OFF pathways" of visual pathways to the brain is correct?

Accepted Answer

A) In the ON pathway bipolar cells fire action potentials only when bright light strikes the photoreceptors linked to them 
B) In the OFF pathway bipolar cells fire action potentials when the photoreceptors linked to them are struck by bright light 
C) The functional benefit of the coexistence of both pathways in the retina is to increase the brain's ability to perceive contrast at the edges and borders of the visual field 
D) Both in the ON pathway bipolar cells fire action potentials only when bright light strikes the photoreceptors linked to them and the functional benefit of the coexistence of both pathways in the retina is to increase the brain's ability to perceive contrast at the edges and borders of the visual field are correct 
E) Both in the OFF pathway bipolar cells fire action potentials when the photoreceptors linked to them are struck by bright light and the functional benefit of the coexistence of both pathways in the retina is to increase the brain's ability to perceive contrast at the edges and borders of the visual field are correct 
A) In the ON pathway bipolar cells fire action potentials only when bright light strikes the photoreceptors linked to them 
B) In the OFF pathway bipolar cells fire action potentials when the photoreceptors linked to them are struck by bright light 
C) The functional benefit of the coexistence of both pathways in the retina is to increase the brain's ability to perceive contrast at the edges and borders of the visual field 
D) Both in the ON pathway bipolar cells fire action potentials only when bright light strikes the photoreceptors linked to them and the functional benefit of the coexistence of both pathways in the retina is to increase the brain's ability to perceive contrast at the edges and borders of the visual field are correct 
E) Both in the OFF pathway bipolar cells fire action potentials when the photoreceptors linked to them are struck by bright light and the functional benefit of the coexistence of both pathways in the retina is to increase the brain's ability to perceive contrast at the edges and borders of the visual field are correct

Question 15

The precision of locating a somatosensory stimulus is greater in areas of the body that have small,overlapping receptive fields than in areas with large,nonoverlapping fields.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following statements with regard to vision is false?

Accepted Answer

A) Photoreceptors are neurons 
B) There are four different photoreceptors in the retina 
C) There are four different photopigments in the retina 
D) There are four types of chromophores in the retina 
E) There are four types of opsin in the retina 
A) Photoreceptors are neurons 
B) There are four different photoreceptors in the retina 
C) There are four different photopigments in the retina 
D) There are four types of chromophores in the retina 
E) There are four types of opsin in the retina

Question 17

The transmission of information in a sensory system is analogous to the transmission of sound in a telephone system except that,unlike the telephone system,the sensory system does not retranslate the electrical signaling code back to the specific energy of the stimulus.

Accepted Answer

A) True 
 B)False

Question 18

A given sensory receptor

Accepted Answer

A) Responds to nonspecific physical or chemical changes in its environment 
B) Transduces several forms of energy to electrical impulses 
C) Is found at the peripheral endings of efferent neurons 
D) Is described by all of the choices 
E) Is described by none of the choices 
A) Responds to nonspecific physical or chemical changes in its environment 
B) Transduces several forms of energy to electrical impulses 
C) Is found at the peripheral endings of efferent neurons 
D) Is described by all of the choices 
E) Is described by none of the choices

Question 19

The optic nerve fibers from each eye meet at the optic chiasm,where they cross.Thus,visual information from the right eye is received by the left side of the brain.

Accepted Answer

A) True 
 B)False

Question 20

Mechanoreceptors include

Accepted Answer

A) Hair cells in the cochlea 
B) Hair cells in the ampulae of the semicircular canals 
C) Hair cells in the olfactory mucosa 
D) Hair cells in the cochlea and hair cells in the ampulae of the semicircular canals 
E) All of the choices are correct 
A) Hair cells in the cochlea 
B) Hair cells in the ampulae of the semicircular canals 
C) Hair cells in the olfactory mucosa 
D) Hair cells in the cochlea and hair cells in the ampulae of the semicircular canals 
E) All of the choices are correct

The greatest concentration of cones is in the fovea centralis of the retina.

When light strikes photoreceptors

The receptors for hearing are found on the

Regarding the ascending pathways in the sensory system,

The plasma membranes of rod and cone cells are

Which of the following statements regarding vision is false?

Perceptions are derived from higher-order processing of sensory information.

In both ON and OFF visual pathways,light stimulates the release of glutamate onto bipolar cells.

Which of the following statements regarding the perception of pain is true?

The conscious sensation of sight is a result of integration of information that is processed by cortical areas of the occipital,temporal,parietal and frontal lobes of the brain.

The density of receptors in a receptive field is usually greatest in the periphery of the field.

Which of the following statements regarding sensory pathways is correct?

The tympanic membrane separates an air-filled chamber from a fluid-filled chamber.

Which of the following statements related to "ON pathways" and "OFF pathways" of visual pathways to the brain is correct?

The precision of locating a somatosensory stimulus is greater in areas of the body that have small,overlapping receptive fields than in areas with large,nonoverlapping fields.

Which of the following statements with regard to vision is false?

The transmission of information in a sensory system is analogous to the transmission of sound in a telephone system except that,unlike the telephone system,the sensory system does not retranslate the electrical signaling code back to the specific energy of the stimulus.

A given sensory receptor

The optic nerve fibers from each eye meet at the optic chiasm,where they cross.Thus,visual information from the right eye is received by the left side of the brain.

Mechanoreceptors include

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Exam 7: Sensory Physiology

The greatest concentration of cones is in the fovea centralis of the retina.

When light strikes photoreceptors

The receptors for hearing are found on the

Regarding the ascending pathways in the sensory system,

The plasma membranes of rod and cone cells are

Which of the following statements regarding vision is false?

Perceptions are derived from higher-order processing of sensory information.

In both ON and OFF visual pathways,light stimulates the release of glutamate onto bipolar cells.

Which of the following statements regarding the perception of pain is true?

The conscious sensation of sight is a result of integration of information that is processed by cortical areas of the occipital,temporal,parietal and frontal lobes of the brain.

The density of receptors in a receptive field is usually greatest in the periphery of the field.

Which of the following statements regarding sensory pathways is correct?

The tympanic membrane separates an air-filled chamber from a fluid-filled chamber.

Which of the following statements related to "ON pathways" and "OFF pathways" of visual pathways to the brain is correct?

The precision of locating a somatosensory stimulus is greater in areas of the body that have small,overlapping receptive fields than in areas with large,nonoverlapping fields.

Which of the following statements with regard to vision is false?

The transmission of information in a sensory system is analogous to the transmission of sound in a telephone system except that,unlike the telephone system,the sensory system does not retranslate the electrical signaling code back to the specific energy of the stimulus.

A given sensory receptor

The optic nerve fibers from each eye meet at the optic chiasm,where they cross.Thus,visual information from the right eye is received by the left side of the brain.

Mechanoreceptors include

Homeostasis: a Framework for Human Physiology

Chemical Composition of the Body

Cellular Structure, Proteins, and Metabolism

Movement of Molecules Across Cell Membranes

Control of Cells by Chemical Messengers

Neuronal Signaling and the Structure of the Nervous System

Consciousness, the Brain, and Behavior

Muscle

Control of Body Movement

The Endocrine System

Cardiovascular Physiology

Respiratory Physiology

The Kidneys and Regulation of Water and Inorganic Ions

The Digestion and Absorption of Food

Regulation of Organic Metabolism and Energy Balance

Reproduction

The Immune System

Medical Physiology: Integration Using Clinical Cases

Filters