Question 1

The modality of a stimulus can be determined within the central nervous system by

Accepted Answer

A)  population coding. 
B)  lateral inhibition. 
C)  frequency coding. 
D)  adequate stimulus for the sensory receptor cell. 
A)  population coding. 
B)  lateral inhibition. 
C)  frequency coding. 
D)  adequate stimulus for the sensory receptor cell. D

Question 2

Phasic receptors

Accepted Answer

A)  are quick to adapt to a particular stimulus intensity. 
B)  slowly decrease the frequency of action potentials generated to a constant stimulus. 
C)  are attune to parameters that the body must continuously assess. 
D)  once threshold is reached by a stimulus will always generate action potentials. 
A)  are quick to adapt to a particular stimulus intensity. 
B)  slowly decrease the frequency of action potentials generated to a constant stimulus. 
C)  are attune to parameters that the body must continuously assess. 
D)  once threshold is reached by a stimulus will always generate action potentials. A

Question 3

Nociceptors are responsible for the perception of

Accepted Answer

A)  pain only. 
B)  skin stretch only. 
C)  itch only. 
D)  pain and itch. 
E)  pain and skin stretch. 
A)  pain only. 
B)  skin stretch only. 
C)  itch only. 
D)  pain and itch. 
E)  pain and skin stretch. D

Question 4

________ is the loss of accommodation that occurs with age due to a loss of lens elasticity.

Accepted Answer

The answer of ________ is the loss of accommodation that...

Question 5

Which of the following cells involved in processing visual information in the retina synapse with the rods?

Accepted Answer

A)  horizontal cells only 
B)  ganglion cells only 
C)  bipolar cells only 
D)  horizontal and bipolar cells only 
E)  horizontal, ganglion, and bipolar 
A)  horizontal cells only 
B)  ganglion cells only 
C)  bipolar cells only 
D)  horizontal and bipolar cells only 
E)  horizontal, ganglion, and bipolar

Question 6

A decrease in the release of neurotransmitter from the photoreceptor would indicate a(n)

Accepted Answer

A)  decrease in light intensity. 
B)  lack of light reaching the retina. 
C)  increase in light intensity. 
D)  change in focus of the lens onto a distant object. 
A)  decrease in light intensity. 
B)  lack of light reaching the retina. 
C)  increase in light intensity. 
D)  change in focus of the lens onto a distant object.

Question 7

Nociceptors activate ________ pathways that provide for the conscious perception of the pain.

Accepted Answer

The answer of Nociceptors activate ________ pathways that provide for...

Question 8

Describe the action of aspirin and opiates in pain relief.What does your answer suggest about opiates?

Accepted Answer

Aspirin inhibits prostaglandins (anti-in

Question 9

Match the type of receptor with the appropriate description.
-The most studied examples of this type are phasic receptors called Pacinian corpuscles.

Accepted Answer

A) chemoreceptors 
B) touch receptors 
C) thermoreceptors 
D) nociceptors 
A) chemoreceptors 
B) touch receptors 
C) thermoreceptors 
D) nociceptors

Question 10

Explain why calling receptors for noxious stimuli "pain receptors" is inaccurate.What is the more accepted term for these receptors?

Accepted Answer

Pain is a perception,not a type of stimu

Question 11

Sensory neurons that maintain their firing as long as the stimulus is present are called ________.

Accepted Answer

The answer of Sensory neurons that maintain their firing as...

Question 12

The two-point discrimination test

Accepted Answer

A)  is used to determine clarity of vision. 
B)  provides information about olfactory receptors. 
C)  provides a measure of receptive field size for touch receptors. 
D)  is used to test for hearing disorders. 
E)  monitors the activity of taste buds. 
A)  is used to determine clarity of vision. 
B)  provides information about olfactory receptors. 
C)  provides a measure of receptive field size for touch receptors. 
D)  is used to test for hearing disorders. 
E)  monitors the activity of taste buds.

Question 13

When a rod located in the retina is stimulated by light,

Accepted Answer

A)  the cell depolarizes. 
B)  the inactive form of retinal associates with bleached opsin. 
C)  the activity of transducin decreases. 
D)  the release of neurotransmitter increases. 
E)  the intracellular concentration of cGMP decreases. 
A)  the cell depolarizes. 
B)  the inactive form of retinal associates with bleached opsin. 
C)  the activity of transducin decreases. 
D)  the release of neurotransmitter increases. 
E)  the intracellular concentration of cGMP decreases.

Question 14

Gustatory cells that respond to sweet,bitter or umami are called

Accepted Answer

A)  type I cells. 
B)  type II cells. 
C)  type III cells. 
D)  type IV cells. 
A)  type I cells. 
B)  type II cells. 
C)  type III cells. 
D)  type IV cells.

Question 15

________ is a condition that causes blurred vision due to the cornea and/or lens not being smoothly curved and symmetrical.

Accepted Answer

The answer of ________ is a condition that causes blurred...

Question 16

Describe the topographic organization of the somatosensory cortex.

Accepted Answer

The cells that respond to sensation from

Question 17

The bending of light as it passes through media of different densities is called ________.

Accepted Answer

The answer of The bending of light as it passes...

Question 18

Identify the FALSE statement regarding sensory receptor cells.

Accepted Answer

A)  Threshold is the minimal stimulus intensity required to generate an action potential. 
B)  Sensory transduction converts stimulus energy into a receptor potential. 
C)  Each type of sensory receptor responds only to the stimulus that defines the receptor. 
D)  A graded potential is referred to as a receptor potential. 
E)  Many sensory receptor cells are NOT nerve cells. 
A)  Threshold is the minimal stimulus intensity required to generate an action potential. 
B)  Sensory transduction converts stimulus energy into a receptor potential. 
C)  Each type of sensory receptor responds only to the stimulus that defines the receptor. 
D)  A graded potential is referred to as a receptor potential. 
E)  Many sensory receptor cells are NOT nerve cells.

Question 19

Match the type of receptor with the appropriate description.
-These receptors slowly adapt,and would be activated when the skin is between 20-40° C.

Accepted Answer

A) chemoreceptors 
B) touch receptors 
C) thermoreceptors 
D) nociceptors 
A) chemoreceptors 
B) touch receptors 
C) thermoreceptors 
D) nociceptors

Question 20

Match the specific receptor to its typical stimulus.
-stretch

Accepted Answer

A) free nerve ending 
B) Merkel receptor 
C) Meissner's corpuscle 
D) Ruffini corpuscle 
E) Pacinian corpuscle 
A) free nerve ending 
B) Merkel receptor 
C) Meissner's corpuscle 
D) Ruffini corpuscle 
E) Pacinian corpuscle

Exam 10: Sensory Physiology

The modality of a stimulus can be determined within the central nervous system by

Phasic receptors

Nociceptors are responsible for the perception of

________ is the loss of accommodation that occurs with age due to a loss of lens elasticity.

Which of the following cells involved in processing visual information in the retina synapse with the rods?

A decrease in the release of neurotransmitter from the photoreceptor would indicate a(n)

Nociceptors activate ________ pathways that provide for the conscious perception of the pain.

Describe the action of aspirin and opiates in pain relief.What does your answer suggest about opiates?

Match the type of receptor with the appropriate description. -The most studied examples of this type are phasic receptors called Pacinian corpuscles.

Explain why calling receptors for noxious stimuli "pain receptors" is inaccurate.What is the more accepted term for these receptors?

Sensory neurons that maintain their firing as long as the stimulus is present are called ________.

The two-point discrimination test

When a rod located in the retina is stimulated by light,

Gustatory cells that respond to sweet,bitter or umami are called

________ is a condition that causes blurred vision due to the cornea and/or lens not being smoothly curved and symmetrical.

Describe the topographic organization of the somatosensory cortex.

The bending of light as it passes through media of different densities is called ________.

Identify the FALSE statement regarding sensory receptor cells.

Match the type of receptor with the appropriate description. -These receptors slowly adapt,and would be activated when the skin is between 20-40° C.

Match the specific receptor to its typical stimulus. -stretch

Introduction to Physiology

Molecular Interactions

Compartmentation: Cells and Tissues

Energy and Cellular Metabolism

Membrane Dynamics

Communication, Integration, and Homeostasis

Introduction to the Endocrine System

Neurons: Cellular and Network Properties

The Central Nervous System

Efferent Division: Autonomic and Somatic Motor Control

Muscles

Integrative Physiology I: Control of Body Movement

Cardiovascular Physiology

Blood Flow and the Control of Blood Pressure

Blood

Mechanics of Breathing

Gas Exchange and Transport

The Kidneys

Integrative Physiology II: Fluid and Electrolyte Balance

The Digestive System

Metabolism and Energy Balance

Endocrine Control of Growth and Metabolism

The Immune System

Integrative Physiology III: Exercise

Reproduction and Development

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