Question 1

The structure in the eye that focuses light onto photoreceptors is the ____.

Accepted Answer

A)  sclera 
B)  pupil 
C)  iris 
D)  lens 
E)  ciliary muscle 
A)  sclera 
B)  pupil 
C)  iris 
D)  lens 
E)  ciliary muscle

Question 2

How does a person distinguish flavors?

Accepted Answer

Concepts to Consider: It depends on the

Question 3

In humans, taste buds lie mainly in tiny elevations called ____.

Accepted Answer

A)  stereocilia 
B)  ommatidia 
C)  ocelli 
D)  papillae 
E)  cilia 
A)  stereocilia 
B)  ommatidia 
C)  ocelli 
D)  papillae 
E)  cilia

Question 4

How does rhodopsin facilitate vision?

Accepted Answer

A)  When light strikes rhodopsin, the bipolar cells becomes depolarized, causing the release of GABA. 
B)  When light strikes rhodopsin, the photoreceptor becomes depolarized, causing the release of GABA. 
C)  When light strikes rhodopsin, the photoreceptor becomes hyperpolarized, causing the release of GABA. 
D)  When light strikes rhodopsin, the photoreceptor becomes depolarized, causing the release of glutamate. 
E)  When light strikes rhodopsin, the photoreceptor becomes hyperpolarized, causing the release of glutamate. 
A)  When light strikes rhodopsin, the bipolar cells becomes depolarized, causing the release of GABA. 
B)  When light strikes rhodopsin, the photoreceptor becomes depolarized, causing the release of GABA. 
C)  When light strikes rhodopsin, the photoreceptor becomes hyperpolarized, causing the release of GABA. 
D)  When light strikes rhodopsin, the photoreceptor becomes depolarized, causing the release of glutamate. 
E)  When light strikes rhodopsin, the photoreceptor becomes hyperpolarized, causing the release of glutamate.

Question 5

The opening in the eye through which light passes is known as the ____.

Accepted Answer

A)  sclera 
B)  pupil 
C)  iris 
D)  lens 
E)  cornea 
A)  sclera 
B)  pupil 
C)  iris 
D)  lens 
E)  cornea

Question 6

The vestibular canal and the tympanic canal are filled with endolymph . 
____________________

Accepted Answer

A) True 
 B)False

Question 7

Auditory receptors are located in the:

Accepted Answer

A)  cochlea. 
B)  semicircular canals. 
C)  utricle. 
D)  ampullae. 
E)  otoliths. 
A)  cochlea. 
B)  semicircular canals. 
C)  utricle. 
D)  ampullae. 
E)  otoliths.

Question 8

The ciliary muscle changes the shape of the lens. 
____________________

Accepted Answer

A) True 
 B)False

Question 9

What is a characteristic of color vision?

Accepted Answer

A)  It is limited to vertebrates. 
B)  It depends on blue, green, and red cones in primates. 
C)  It is the result of different concentrations of the photopigment rhodopsin. 
D)  It results from special photoreceptors located within the optic nerve. 
E)  It depends on four types of cones in mammals other than primates. 
A)  It is limited to vertebrates. 
B)  It depends on blue, green, and red cones in primates. 
C)  It is the result of different concentrations of the photopigment rhodopsin. 
D)  It results from special photoreceptors located within the optic nerve. 
E)  It depends on four types of cones in mammals other than primates.

Question 10

Some sensory receptors decrease their frequency of action potentials when exposed to a continued, constant stimulus in a process known as:

Accepted Answer

A)  transduction. 
B)  sensory adaptation. 
C)  referred perception. 
D)  reception. 
E)  sensory summation. 
A)  transduction. 
B)  sensory adaptation. 
C)  referred perception. 
D)  reception. 
E)  sensory summation.

Question 11

Figure 43-1   Refer to the accompanying figure with the lateral line organs of fishe s . The structures indicated by label 1 are:

Accepted Answer

A)  hair cells. 
B)  cupula. 
C)  stereocilia. 
D)  sensory neurons. 
E)  supporting cells. 
A)  hair cells. 
B)  cupula. 
C)  stereocilia. 
D)  sensory neurons. 
E)  supporting cells.

Question 12

A sudden loud sound such as an explosion is most likely to impair hearing by damaging which of the following?

Accepted Answer

A)  hair cells in the organ of Corti 
B)  the vestibular nerve 
C)  the utricle and saccule 
D)  the otoliths 
E)  the endolymph 
A)  hair cells in the organ of Corti 
B)  the vestibular nerve 
C)  the utricle and saccule 
D)  the otoliths 
E)  the endolymph

Question 13

Match between columns
                        Premises: electrical potentials
touch
heat
odorants
light
temperature extremes

Accepted Answer

The Answer of photoreceptors and nociceptors and chemoreceptors and electroreceptors is...

Question 14

The ability of the brain to assign meaning to a stimulus is called:

Accepted Answer

A)  adaptation. 
B)  integration. 
C)  sensation. 
D)  perception. 
E)  assimilation. 
A)  adaptation. 
B)  integration. 
C)  sensation. 
D)  perception. 
E)  assimilation.

Question 15

Describe the five main types of connecting neurons in the retina and their functions.

Accepted Answer

Concepts to Consider: 1 Photoreceptors--

Question 16

Chemoreceptors are involved with which two senses?

Accepted Answer

A)  touch and olfaction 
B)  hearing and olfaction 
C)  gustation and touch 
D)  gustation and vision 
E)  gustation and olfaction 
A)  touch and olfaction 
B)  hearing and olfaction 
C)  gustation and touch 
D)  gustation and vision 
E)  gustation and olfaction

Question 17

After working several hours in a flower shop, you do not detect the smell of the roses. Why?

Accepted Answer

A)  Sensory adaptation has occurred. 
B)  Competing signal transduction pathways have been activated. 
C)  Sensory perception has been blocked. 
D)  Sensory summation has occurred. 
E)  The nasal epithelium has become blocked. 
A)  Sensory adaptation has occurred. 
B)  Competing signal transduction pathways have been activated. 
C)  Sensory perception has been blocked. 
D)  Sensory summation has occurred. 
E)  The nasal epithelium has become blocked.

Question 18

Which statement concerning gravity detection in humans is true?

Accepted Answer

A)  Statoliths are pulled down by gravity, stimulating hair cells of the statocysts. 
B)  Otoliths are pulled down by gravity onto stereocilia, stimulating nerve impulses. 
C)  Gravity moves the cupula, causing hair cells of the lateral line organs to bend. 
D)  Gravity pulls on the hair cells of the basilar membrane, stimulating nerve impulses. 
E)  Gravity moves perilymph over the hair cells of the tectorial membrane. 
A)  Statoliths are pulled down by gravity, stimulating hair cells of the statocysts. 
B)  Otoliths are pulled down by gravity onto stereocilia, stimulating nerve impulses. 
C)  Gravity moves the cupula, causing hair cells of the lateral line organs to bend. 
D)  Gravity pulls on the hair cells of the basilar membrane, stimulating nerve impulses. 
E)  Gravity moves perilymph over the hair cells of the tectorial membrane.

Question 19

Explain energy transduction and receptor potential as they relate to the function of a sensory receptor.

Accepted Answer

Sensory receptors convert (transduce the

Question 20

The vestibular canal contains ____, while the cochlear duct contains ____.

Accepted Answer

A)  endolymph; perilymph 
B)  tympanic membrane; organ of Corti 
C)  organ of Corti; endolymph 
D)  perilymph; endolymph 
E)  scala media; endolymph 
A)  endolymph; perilymph 
B)  tympanic membrane; organ of Corti 
C)  organ of Corti; endolymph 
D)  perilymph; endolymph 
E)  scala media; endolymph

Exam 43: Sensory Systems

The structure in the eye that focuses light onto photoreceptors is the ____.

How does a person distinguish flavors?

In humans, taste buds lie mainly in tiny elevations called ____.

How does rhodopsin facilitate vision?

The opening in the eye through which light passes is known as the ____.

The vestibular canal and the tympanic canal are filled with endolymph . ____________________

Auditory receptors are located in the:

The ciliary muscle changes the shape of the lens. ____________________

What is a characteristic of color vision?

Some sensory receptors decrease their frequency of action potentials when exposed to a continued, constant stimulus in a process known as:

Figure 43-1 Refer to the accompanying figure with the lateral line organs of fishe s . The structures indicated by label 1 are:

A sudden loud sound such as an explosion is most likely to impair hearing by damaging which of the following?

The ability of the brain to assign meaning to a stimulus is called:

Describe the five main types of connecting neurons in the retina and their functions.

Chemoreceptors are involved with which two senses?

After working several hours in a flower shop, you do not detect the smell of the roses. Why?

Which statement concerning gravity detection in humans is true?

Explain energy transduction and receptor potential as they relate to the function of a sensory receptor.

The vestibular canal contains ____, while the cochlear duct contains ____.

A View of Life

Atoms and Molecules the Chemical Basis of Life

The Chemistry of Life Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp Energy-Releasing Pathways

Photosynthesis Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure Growth and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function an Introduction

Protection Support and Movement

Neural Signaling

Neural Regulation

Internal Transport

The Immune System Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

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The vestibular canal contains , while the cochlear duct contains .