Question 1

Mechanoreceptors (touch)are not evenly spaced on your body. What part of the body might be expected to have mechanoreceptors located farther apart?

Accepted Answer

A) lip 
B) fingertip 
C) underside of wrist 
D) stomach 
A) lip 
B) fingertip 
C) underside of wrist 
D) stomach

Question 2

Where does the information from the light receptors undergo its first level of neural processing?

Accepted Answer

A) in the retina 
B) in the optic nerve 
C) in the primary visual cortex 
D) in the hippocampus 
A) in the retina 
B) in the optic nerve 
C) in the primary visual cortex 
D) in the hippocampus

Question 3

Which part of this figure depicting an eye is the retina?

Accepted Answer

A) part A 
B) part B 
C) part C 
D) part D 
A) part A 
B) part B 
C) part C 
D) part D

Question 4

If the aqueous humor circulates but does not drain properly, the likely result will be the development of

Accepted Answer

A) glaucoma. 
B) myopia. 
C) astigmatism. 
D) hyperopia. 
A) glaucoma. 
B) myopia. 
C) astigmatism. 
D) hyperopia.

Question 5

If you are in an airplane encountering turbulence and you start feeling sick to your stomach, would closing your eyes help? Why?

Accepted Answer

A) Yes. It will calm you by allowing the sensory information from your chemoreceptors to properly readjust. 
B) Yes. It will eliminate the conflict between information from your inner ears and information from your eyes. 
C) No. It will intensify the feeling of falling by eliminating the sight of the cabin. 
D) No. It will focus your attention on the nausea. 
A) Yes. It will calm you by allowing the sensory information from your chemoreceptors to properly readjust. 
B) Yes. It will eliminate the conflict between information from your inner ears and information from your eyes. 
C) No. It will intensify the feeling of falling by eliminating the sight of the cabin. 
D) No. It will focus your attention on the nausea.

Question 6

If you close your eyes, hold your hands over your eyes for a short time, and then uncover your eyes, your pupils will be

Accepted Answer

A) a darker color than normal. 
B) smaller than normal. 
C) larger than normal. 
D) a lighter color than normal. 
A) a darker color than normal. 
B) smaller than normal. 
C) larger than normal. 
D) a lighter color than normal.

Question 7

Which of the following classes of sensory receptors responds to stimuli such as touch, pressure, stretching, and sound?

Accepted Answer

A) thermoreceptors 
B) mechanoreceptors 
C) electromagnetic receptors 
D) chemoreceptors 
A) thermoreceptors 
B) mechanoreceptors 
C) electromagnetic receptors 
D) chemoreceptors

Question 8

The receptor potential is the

Accepted Answer

A) membrane potential produced when a neurotransmitter molecule binds to its receptor. 
B) membrane potential produced in the receptor cell by sensory transduction. 
C) electrical signal produced by an action potential. 
D) membrane potential produced at a muscle cell. 
A) membrane potential produced when a neurotransmitter molecule binds to its receptor. 
B) membrane potential produced in the receptor cell by sensory transduction. 
C) electrical signal produced by an action potential. 
D) membrane potential produced at a muscle cell.

Question 9

Which of the following options incorrectly pairs a class of sensory receptor with one of the stimuli it detects?

Accepted Answer

A) electromagnetic receptors-light 
B) chemoreceptors-molecular structure 
C) mechanoreceptors-sound 
D) thermoreceptors-touch 
A) electromagnetic receptors-light 
B) chemoreceptors-molecular structure 
C) mechanoreceptors-sound 
D) thermoreceptors-touch

Question 10

Which of the following structures is involved in the human sense of balance?

Accepted Answer

A) the outer ear 
B) the oval window 
C) the utricle 
D) the basilar membrane 
A) the outer ear 
B) the oval window 
C) the utricle 
D) the basilar membrane

Question 11

Integration of sensory stimuli occurs

Accepted Answer

A) in highly specialized receptors such as the organ of Corti. 
B) in all receptors. 
C) in the brain. 
D) in the central and peripheral nervous systems. 
A) in highly specialized receptors such as the organ of Corti. 
B) in all receptors. 
C) in the brain. 
D) in the central and peripheral nervous systems.

Question 12

Fish that quickly and accurately sense the location of a nearby motionless fish in cloudy water are probably using

Accepted Answer

A) electromagnetic receptors. 
B) photoreceptors. 
C) chemoreceptors. 
D) pain receptors. 
A) electromagnetic receptors. 
B) photoreceptors. 
C) chemoreceptors. 
D) pain receptors.

Question 13

Which of the following is an example of sensory adaptation of receptors?

Accepted Answer

A) distinguishing between different colors 
B) ignoring the shoes on your feet 
C) thinking about what you would do with a million dollars 
D) detecting sound and light simultaneously 
A) distinguishing between different colors 
B) ignoring the shoes on your feet 
C) thinking about what you would do with a million dollars 
D) detecting sound and light simultaneously

Question 14

One hypothesis explaining animals' abilities to detect a magnetic field and use it to navigate is that sensory cells detect electrical fluctuations influenced by Earth's magnetic field. Which of the following pieces of evidence, if it were true, would support this hypothesis?

Accepted Answer

A) Sensory cells of an organism known to use magnetic fields to navigate show an increase in action potential firing when in the presence of electrical fluctuations. 
B) Sensory cells of an organism known to use magnetic fields to navigate show a decrease in action potential firing when in the presence of electrical fluctuations. 
C) Sensory cells of an organism known to use magnetic fields to navigate show a greater density of negative ions on the outside of its plasma membrane. 
D) Sensory cells of an organism known to use magnetic fields to navigate produce greater amounts of enzymes sensitive to electrical fluctuations. 
A) Sensory cells of an organism known to use magnetic fields to navigate show an increase in action potential firing when in the presence of electrical fluctuations. 
B) Sensory cells of an organism known to use magnetic fields to navigate show a decrease in action potential firing when in the presence of electrical fluctuations. 
C) Sensory cells of an organism known to use magnetic fields to navigate show a greater density of negative ions on the outside of its plasma membrane. 
D) Sensory cells of an organism known to use magnetic fields to navigate produce greater amounts of enzymes sensitive to electrical fluctuations.

Question 15

Suppose you have three water baths in front of you. The temperature of the one on the left is 22°C (cold), the one in the middle is 25°C (room temperature,)and the one on the right is 44°C (warm). At the same time, you place the index finger of your right hand into the warm water bath and the index finger of your left hand into the cold water bath, and you leave them there for 2 minutes. After 2 minutes, why would you no longer feel a difference in temperature between the two water baths?

Accepted Answer

A) The sensory receptors in your index fingers speed up the conversion of the stimulus (water)to a chemical signal. 
B) The sensory receptors in your index fingers diminish the conversion of the stimulus (water)to an electrical signal. 
C) The sensory receptors in your index fingers become less sensitive over time as they are stimulated repeatedly. 
D) Receptor potentials in the sensory receptors in your index fingers start off weak and then become stronger. 
A) The sensory receptors in your index fingers speed up the conversion of the stimulus (water)to a chemical signal. 
B) The sensory receptors in your index fingers diminish the conversion of the stimulus (water)to an electrical signal. 
C) The sensory receptors in your index fingers become less sensitive over time as they are stimulated repeatedly. 
D) Receptor potentials in the sensory receptors in your index fingers start off weak and then become stronger.

Question 16

The hair cells in the utricle detect

Accepted Answer

A) subsonic sound vibrations. 
B) rotation of the head in an anteroposterior plane (a plane that cuts through you from front to back). 
C) rotation of the head in a coronal plane (a plane that cuts through you from side to side). 
D) the position of the head with respect to gravity. 
A) subsonic sound vibrations. 
B) rotation of the head in an anteroposterior plane (a plane that cuts through you from front to back). 
C) rotation of the head in a coronal plane (a plane that cuts through you from side to side). 
D) the position of the head with respect to gravity.

Question 17

After reading the paragraph below, answer the questions that follow.
A common aspect of having a cold is nose congestion ("stuffy nose"). Air is not able to flow past your olfactory receptors, so you cannot detect smells. When eating, it is olfactory receptors, and not taste receptors, that detect the smells of your food and relate those to your brain as flavors.
-Suppose you are trying to convince your sick child to drink some medicine that he knows does not taste good. You tell him to hold his nose while he drinks it because that will help take the bad taste away. Does your statement have any truth to it?

Accepted Answer

A) Yes. Holding your nose allows you to detect multiple tastes at one time. 
B) Yes. Holding your nose increases production of glutamate. 
C) Yes. Holding your nose dulls the sensitivity of taste receptors. 
D) Yes. Holding your nose has the same effect as having a congested nose. 
A) Yes. Holding your nose allows you to detect multiple tastes at one time. 
B) Yes. Holding your nose increases production of glutamate. 
C) Yes. Holding your nose dulls the sensitivity of taste receptors. 
D) Yes. Holding your nose has the same effect as having a congested nose.

Question 18

Which of the following components of the human eye forms the iris?

Accepted Answer

A) sclera 
B) choroid 
C) retina 
D) pupil 
A) sclera 
B) choroid 
C) retina 
D) pupil

Question 19

"Supertasters" are individuals who

Accepted Answer

A) prefer foods that are somewhat bitter, such as vegetables. 
B) typically have more food dislikes. 
C) have fewer fungiform papillae on their tongue. 
D) tend to eat healthier and have fewer diseases. 
A) prefer foods that are somewhat bitter, such as vegetables. 
B) typically have more food dislikes. 
C) have fewer fungiform papillae on their tongue. 
D) tend to eat healthier and have fewer diseases.

Question 20

After reading the paragraph below, answer the questions that follow.
A common aspect of having a cold is nose congestion ("stuffy nose"). Air is not able to flow past your olfactory receptors, so you cannot detect smells. When eating, it is olfactory receptors, and not taste receptors, that detect the smells of your food and relate those to your brain as flavors.
-Suppose you have a bag of assorted flavors of candy. You close your eyes, hold your nose, and pull out a piece of candy and eat it. Then you try to describe the candy's flavor. How accurate do you think your prediction will be?

Accepted Answer

A) very accurate, because your taste receptors can detect multiple tastes at one time 
B) not very accurate, because you cannot fully experience the flavor of the candy 
C) not very accurate, because the production of glutamate will be decreased 
D) very accurate, because holding your nose heightens sensitivity of your taste receptors 
A) very accurate, because your taste receptors can detect multiple tastes at one time 
B) not very accurate, because you cannot fully experience the flavor of the candy 
C) not very accurate, because the production of glutamate will be decreased 
D) very accurate, because holding your nose heightens sensitivity of your taste receptors

Exam 29: the Senses

Mechanoreceptors (touch)are not evenly spaced on your body. What part of the body might be expected to have mechanoreceptors located farther apart?

Where does the information from the light receptors undergo its first level of neural processing?

Which part of this figure depicting an eye is the retina?

If the aqueous humor circulates but does not drain properly, the likely result will be the development of

If you are in an airplane encountering turbulence and you start feeling sick to your stomach, would closing your eyes help? Why?

If you close your eyes, hold your hands over your eyes for a short time, and then uncover your eyes, your pupils will be

Which of the following classes of sensory receptors responds to stimuli such as touch, pressure, stretching, and sound?

The receptor potential is the

Which of the following options incorrectly pairs a class of sensory receptor with one of the stimuli it detects?

Which of the following structures is involved in the human sense of balance?

Integration of sensory stimuli occurs

Fish that quickly and accurately sense the location of a nearby motionless fish in cloudy water are probably using

Which of the following is an example of sensory adaptation of receptors?

One hypothesis explaining animals' abilities to detect a magnetic field and use it to navigate is that sensory cells detect electrical fluctuations influenced by Earth's magnetic field. Which of the following pieces of evidence, if it were true, would support this hypothesis?

The hair cells in the utricle detect

Which of the following components of the human eye forms the iris?

"Supertasters" are individuals who

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