Question 1

The electroreceptors of sharks,rays,and snakes can detect electrical fields or disturbances in electrical fields.These receptors are called

Accepted Answer

A) Organ of Corti. 
B) Malpighian tubules. 
C) Fallopian tubes. 
D) Organ of Krebs. 
E) Ampullae of Lorenzini. 
A) Organ of Corti. 
B) Malpighian tubules. 
C) Fallopian tubes. 
D) Organ of Krebs. 
E) Ampullae of Lorenzini.

Question 2

Which of the following taste modalities does not involve a G-protein receptor?

Accepted Answer

A) bitter 
B) sweet 
C) umami 
D) sour 
E) All of the taste modalities involve a g-protein receptor. 
A) bitter 
B) sweet 
C) umami 
D) sour 
E) All of the taste modalities involve a g-protein receptor.

Question 3

Vision is perceived by which of the following sequential events?
I-The bound photopigment cis-retinal of the photoreceptor rods and cones dissociates in response to light,thus it indirectly activates the bipolar neurons and then ganglion cells.
II-The action potentials are propagated through the axons of ganglion cells,the stimuli thus are projected to the occipital region of the brain.
III-A negative charge in the opening of the canal depolarizes the receptor at the base,which causes release of neurotransmitter and increase activity of the sensory neurons.

Accepted Answer

A) I then III 
B) III then II 
C) III then I then II 
D) I then II then III 
E) I then II 
A) I then III 
B) III then II 
C) III then I then II 
D) I then II then III 
E) I then II

Question 4

The mechanism by which sensory information is conveyed to the CNS is composed of which sequential steps?

Accepted Answer

A) stimulation and transduction 
B) transmission and interpretation 
C) neurotransmitter release and ion flow through the synaptic cleft 
D) stimulation,transduction,transmission,and interpretation 
E) stimulation,transduction,transmission,interpretation,and neurotransmitter release 
A) stimulation and transduction 
B) transmission and interpretation 
C) neurotransmitter release and ion flow through the synaptic cleft 
D) stimulation,transduction,transmission,and interpretation 
E) stimulation,transduction,transmission,interpretation,and neurotransmitter release

Question 5

Which of the following statements about olfaction,the sense of smell,in terrestrial vertebrates is(are)true?
I-Involved chemoreceptors are located in the upper portion of the nasal passages.
II-These receptors are bipolar neurons whose dendrites end in tassels of cilia that project into the nasal mucosa.
III-The axons of these receptors project directly into the cerebral cortex.
IV-Thousands of different smells can be discerned as opposed to only four kinds of taste.

Accepted Answer

A) I and II 
B) II,III,and IV 
C) I,III,and IV 
D) I,II,III,and IV 
A) I and II 
B) II,III,and IV 
C) I,III,and IV 
D) I,II,III,and IV

Question 6

Which of the following is not attributed to proprioceptors?

Accepted Answer

A) provides information regarding muscle temperature 
B) provides information regarding limb movement 
C) provides information regarding muscle position 
D) provides information regarding muscle contraction 
E) provides information regarding muscle stretch 
A) provides information regarding muscle temperature 
B) provides information regarding limb movement 
C) provides information regarding muscle position 
D) provides information regarding muscle contraction 
E) provides information regarding muscle stretch

Question 7

When a retinal molecule captures a photon,

Accepted Answer

A) it releases an electron. 
B) it glows. 
C) it changes configuration. 
D) it begins to vibrate. 
E) it does nothing. 
A) it releases an electron. 
B) it glows. 
C) it changes configuration. 
D) it begins to vibrate. 
E) it does nothing.

Question 8

If one examines the ear of a human and begins with the outer ear and continues to the inner ear,what is the order of structures encountered?

Accepted Answer

A) tympanic membrane $\rarr$malleus $\rarr$ incus $\rarr$stapes $\rarr$ oval window $\rarr$ cochlea 
B) tympanic membrane $\rarr$ incus $\rarr$ malleus $\rarr$ stapes $\rarr$ oval window $\rarr$ cochlea 
C) tympanic membrane $\rarr$ stapes $\rarr$ malleus $\rarr$ incus $\rarr$ oval window $\rarr$ cochlea 
D) tympanic membrane $\rarr$ malleus $\rarr$incus$\rarr$stapes $\rarr$cochlea $\rarr$ oval window 
E) tympanic membrane $\rarr$ oval window $\rarr$ malleus $\rarr$incus $\rarr$ stapes $\rarr$ cochlea 
A) tympanic membrane $\rarr$malleus $\rarr$ incus $\rarr$stapes $\rarr$ oval window $\rarr$ cochlea 
B) tympanic membrane $\rarr$ incus $\rarr$ malleus $\rarr$ stapes $\rarr$ oval window $\rarr$ cochlea 
C) tympanic membrane $\rarr$ stapes $\rarr$ malleus $\rarr$ incus $\rarr$ oval window $\rarr$ cochlea 
D) tympanic membrane $\rarr$ malleus $\rarr$incus$\rarr$stapes $\rarr$cochlea $\rarr$ oval window 
E) tympanic membrane $\rarr$ oval window $\rarr$ malleus $\rarr$incus $\rarr$ stapes $\rarr$ cochlea

Question 9

By being active and efficient in the dark with sonar,which of the following animals became the most numerous and widespread?

Accepted Answer

A) bats 
B) whales 
C) owls 
D) dolphins 
E) shrews 
A) bats 
B) whales 
C) owls 
D) dolphins 
E) shrews

Question 10

Which of the following regarding hair cells is false?

Accepted Answer

A) can be found in the mammalian ear 
B) can be found in the fish lateral line system 
C) can repair if ruptured 
D) bending of hair cells allows ion movement across membrane 
E) composed of stereocilia and a kinocilium 
A) can be found in the mammalian ear 
B) can be found in the fish lateral line system 
C) can repair if ruptured 
D) bending of hair cells allows ion movement across membrane 
E) composed of stereocilia and a kinocilium

Question 11

Stimulus-gated channels respond to stimulation of

Accepted Answer

A) sensory cells. 
B) adipose cells. 
C) blood cells. 
D) intestinal mucosal cells. 
E) bone cells. 
A) sensory cells. 
B) adipose cells. 
C) blood cells. 
D) intestinal mucosal cells. 
E) bone cells.

Question 12

Which of the following regarding vision is false?

Accepted Answer

A) Vertebrate rods and cones hyperpolarize in response to light. 
B) Insects and birds can often see into the ultraviolet range. 
C) Bright light will often produce action potentials in both rods and cones. 
D) Invertebrate photoreceptor membranes depolarize in response to light. 
E) Rhodopsin is found in the membrane of the rods and cones. 
A) Vertebrate rods and cones hyperpolarize in response to light. 
B) Insects and birds can often see into the ultraviolet range. 
C) Bright light will often produce action potentials in both rods and cones. 
D) Invertebrate photoreceptor membranes depolarize in response to light. 
E) Rhodopsin is found in the membrane of the rods and cones.

Question 13

Of all of the sensory perceptions in vertebrates,the least understood is

Accepted Answer

A) electricity. 
B) magnetism. 
C) vision. 
D) hearing. 
E) mechanical;touching. 
A) electricity. 
B) magnetism. 
C) vision. 
D) hearing. 
E) mechanical;touching.

Question 14

All of the following are mechanoreceptors except

Accepted Answer

A) Meissner's corpuscles. 
B) Ruffini endings. 
C) Merkel cells. 
D) red corpuscles. 
E) Pacinian corpuscles. 
A) Meissner's corpuscles. 
B) Ruffini endings. 
C) Merkel cells. 
D) red corpuscles. 
E) Pacinian corpuscles.

Question 15

The Organ of Corti consists of the

Accepted Answer

A) sensory apparatus consisting of the basilar membrane. 
B) the tectorial membrane and the basilar membrane. 
C) hair cells with associated neurons. 
D) hair cells with associated neurons and the tectorial membrane. 
E) the basilar membrane,the tectorial membrane,and hair cells. 
A) sensory apparatus consisting of the basilar membrane. 
B) the tectorial membrane and the basilar membrane. 
C) hair cells with associated neurons. 
D) hair cells with associated neurons and the tectorial membrane. 
E) the basilar membrane,the tectorial membrane,and hair cells.

Question 16

The middle ear consists of

Accepted Answer

A) three ossicle bones. 
B) the ear canal. 
C) the ear drum. 
D) the vestibular canal. 
E) the tympanic canal. 
A) three ossicle bones. 
B) the ear canal. 
C) the ear drum. 
D) the vestibular canal. 
E) the tympanic canal.

Question 17

Human taste buds are specialized to taste all of the following except

Accepted Answer

A) salty. 
B) sour. 
C) sweet. 
D) toxic. 
E) bitter. 
A) salty. 
B) sour. 
C) sweet. 
D) toxic. 
E) bitter.

Question 18

Which of the following constitute the vestibular apparatus?

Accepted Answer

A) saccule and utricle 
B) semicircular canals,saccule,and utricle 
C) ampullae of Lorenzini 
D) Merkel cells 
E) saccule,utricle,and ventricle 
A) saccule and utricle 
B) semicircular canals,saccule,and utricle 
C) ampullae of Lorenzini 
D) Merkel cells 
E) saccule,utricle,and ventricle

Question 19

All of the following are examples of interoceptors except

Accepted Answer

A) temperature. 
B) vibration. 
C) pain. 
D) magnetism. 
E) touch. 
A) temperature. 
B) vibration. 
C) pain. 
D) magnetism. 
E) touch.

Question 20

Vertebrate receptors for gravity consist of:
I-Utricle and saccule chambers of a membranous labyrinth.
II-Hair cells with stereocilia and kinocilium.
III-Hairlike processes embedded with otolith membrane,a gelatinous membrane containing calcium carbonate crystals.
IV-Peripheral chemoreceptors.

Accepted Answer

A) I and II 
B) II,III,and IV 
C) I and IV 
D) I,II,III,and IV 
E) I,II,and III 
A) I and II 
B) II,III,and IV 
C) I and IV 
D) I,II,III,and IV 
E) I,II,and III

Exam 45: Sensory Systems

The electroreceptors of sharks,rays,and snakes can detect electrical fields or disturbances in electrical fields.These receptors are called

Which of the following taste modalities does not involve a G-protein receptor?

The mechanism by which sensory information is conveyed to the CNS is composed of which sequential steps?

Which of the following is not attributed to proprioceptors?

When a retinal molecule captures a photon,

If one examines the ear of a human and begins with the outer ear and continues to the inner ear,what is the order of structures encountered?

By being active and efficient in the dark with sonar,which of the following animals became the most numerous and widespread?

Which of the following regarding hair cells is false?

Stimulus-gated channels respond to stimulation of

Which of the following regarding vision is false?

Of all of the sensory perceptions in vertebrates,the least understood is

All of the following are mechanoreceptors except

The Organ of Corti consists of the

The middle ear consists of

Human taste buds are specialized to taste all of the following except

Which of the following constitute the vestibular apparatus?

All of the following are examples of interoceptors except

Vertebrate receptors for gravity consist of: I-Utricle and saccule chambers of a membranous labyrinth. II-Hair cells with stereocilia and kinocilium. III-Hairlike processes embedded with otolith membrane,a gelatinous membrane containing calcium carbonate crystals. IV-Peripheral chemoreceptors.

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