LS7C Week 4 RQs & CQs
Which of the following allows the determination of the strength of a signal?
Question 1 choices
Choice A., the intensity of the action potential exhibited by the local sensory neurons
Choice B., the frequency of action potentials exhibited by the local sensory neurons
Choice C., the degree to which adjacent interneurons are inhibited
Choice D., the frequency of action potentials exhibited by adjacent interneurons - correct answer
Choice B., the frequency of action potentials exhibited by the local sensory neurons
Over a period of time, the number of action potentials exhibited by a stimulated sensory neuron
decreases. This is known as:
Question 2 choices
Choice A., the refractory period.
Choice B., accommodation.
Choice C., lateral inhibition.
Choice D., sensory adjustment - correct answer B, accomodation
Which of the following describes the functional importance of lateral inhibition?
Question 3 choices
Choice A., Lateral inhibition allows the determination of the frequency of a stimulus.
Choice B., Lateral inhibition allows the determination of the intensity of a stimulus.
Choice C., Lateral inhibition allows the determination of the location of the source of a stimulus. -
correct answer C, Lateral inhibtion allows the determination of the location of the source of a
stimulus.
Question 4 of 5
Lateral inhibition is the result of a sensory neuron causing which of the following?
Question 4 choices
,Choice A., the direct inhibition of adjacent interneurons
Choice B., the direct inhibition of adjacent sensory neurons
Choice C., the direct inhibition of adjacent motor neurons - correct answer A, the direct inhibition
of adjacent interneurons
We are not aware of the fact that we are wearing socks shortly after we put them on. This is due to
which of the following?
Question 5 choices
Choice A., lateral inhibition
Choice B., the direct inhibition of sensory stimuli
Choice C., sensory adjustment
Choice D., accommodation - correct answer D, accomodation
Hair cells function by:
using chemosensory receptors.
stabilizing homeostasis.
firing action potentials directly.
releasing neurotransmitters. - correct answer Releasing neurotransmitters
What is the primary function of a statolith?
to determine the direction of gravity
to determine whether an organism is stationary or moving
to detect vibrations in water
to amplify sound waves - correct answer to determine the direction of gravity
Predict which type of channel is associated with ion transport in stereocilia.
ligand-gated channel
, stretch-gated channel
stretch-gated channel and voltage-gated channel
voltage-gated channel - correct answer stretch-gated channel
Aging can sometimes lead to an increase in the stiffness at the base of the basilar membrane. What
effect would this have on a person's hearing?
The person would lose the ability to hear low-pitched sounds.
The person would only be able to hear loud sounds.
The person would lose the ability to hear high-pitched sounds.
The person would not be able to distinguish the amplitude of a sound. - correct answer The person
would lose the ability to hear high-pitched sounds.
How are sound vibrations amplified in a vertebrate ear?
by movements of the basilar membrane induced by fluid vibrations
by differences in the surface area of the eardrum versus the oval window
by movement of the bones of the middle ear and by differences in the surface area of the eardrum
versus the oval window
by movement of the bones of the middle ear - correct answer By movement of the bones of the
middle ear and by differences in the surface area of the eardrum versus the oval window.
What type of sensory receptor is a hair cell?
mechanoreceptor
electroreceptor
nociceptor
chemoreceptor - correct answer Mechanoreceptor
What senses do the three semicircular canals in the mammalian inner ear provide?
a sense of angular motion and balance
Which of the following allows the determination of the strength of a signal?
Question 1 choices
Choice A., the intensity of the action potential exhibited by the local sensory neurons
Choice B., the frequency of action potentials exhibited by the local sensory neurons
Choice C., the degree to which adjacent interneurons are inhibited
Choice D., the frequency of action potentials exhibited by adjacent interneurons - correct answer
Choice B., the frequency of action potentials exhibited by the local sensory neurons
Over a period of time, the number of action potentials exhibited by a stimulated sensory neuron
decreases. This is known as:
Question 2 choices
Choice A., the refractory period.
Choice B., accommodation.
Choice C., lateral inhibition.
Choice D., sensory adjustment - correct answer B, accomodation
Which of the following describes the functional importance of lateral inhibition?
Question 3 choices
Choice A., Lateral inhibition allows the determination of the frequency of a stimulus.
Choice B., Lateral inhibition allows the determination of the intensity of a stimulus.
Choice C., Lateral inhibition allows the determination of the location of the source of a stimulus. -
correct answer C, Lateral inhibtion allows the determination of the location of the source of a
stimulus.
Question 4 of 5
Lateral inhibition is the result of a sensory neuron causing which of the following?
Question 4 choices
,Choice A., the direct inhibition of adjacent interneurons
Choice B., the direct inhibition of adjacent sensory neurons
Choice C., the direct inhibition of adjacent motor neurons - correct answer A, the direct inhibition
of adjacent interneurons
We are not aware of the fact that we are wearing socks shortly after we put them on. This is due to
which of the following?
Question 5 choices
Choice A., lateral inhibition
Choice B., the direct inhibition of sensory stimuli
Choice C., sensory adjustment
Choice D., accommodation - correct answer D, accomodation
Hair cells function by:
using chemosensory receptors.
stabilizing homeostasis.
firing action potentials directly.
releasing neurotransmitters. - correct answer Releasing neurotransmitters
What is the primary function of a statolith?
to determine the direction of gravity
to determine whether an organism is stationary or moving
to detect vibrations in water
to amplify sound waves - correct answer to determine the direction of gravity
Predict which type of channel is associated with ion transport in stereocilia.
ligand-gated channel
, stretch-gated channel
stretch-gated channel and voltage-gated channel
voltage-gated channel - correct answer stretch-gated channel
Aging can sometimes lead to an increase in the stiffness at the base of the basilar membrane. What
effect would this have on a person's hearing?
The person would lose the ability to hear low-pitched sounds.
The person would only be able to hear loud sounds.
The person would lose the ability to hear high-pitched sounds.
The person would not be able to distinguish the amplitude of a sound. - correct answer The person
would lose the ability to hear high-pitched sounds.
How are sound vibrations amplified in a vertebrate ear?
by movements of the basilar membrane induced by fluid vibrations
by differences in the surface area of the eardrum versus the oval window
by movement of the bones of the middle ear and by differences in the surface area of the eardrum
versus the oval window
by movement of the bones of the middle ear - correct answer By movement of the bones of the
middle ear and by differences in the surface area of the eardrum versus the oval window.
What type of sensory receptor is a hair cell?
mechanoreceptor
electroreceptor
nociceptor
chemoreceptor - correct answer Mechanoreceptor
What senses do the three semicircular canals in the mammalian inner ear provide?
a sense of angular motion and balance
