Question 1
A few sensory receptors are listed below. Select each one that is NOT a neuron, but is instead a modified epithelial cell. This question has multiple correct answers.
Answer Choices:
semicircular canal crista ampullaris hair cell
vestibular macula hair cell
taste cell
olfactory receptor neuron
spiral organ hair cell
Question 2
Every sensory receptor has to produce a generator potential to activate the next cell in its pathway (or itself). The sensory receptors for the somatic senses are true neurons, with their cell bodies typically within the [2]. Meanwhile, the only special senses receptor that is a true neuron with an axon is the [3]. For example, taste cells are [4] that exist entirely within the [5]. Each sensory receptor is activated by specific stimuli, so that [6] are activated within the cochlea by a [7] that causes a [8] of their hairs, while [9] in the semicircular canals are activated by [10] that causes [11] to push on their hairs. Some sensory receptors can only be [12] by their stimuli, while others, like the vestibular sensory receptors, can be [13] by their stimuli. When a sensory receptor does not have an axon, it has to synapse onto a neuron in order to send the information back to the [14]. For example, a taste cell for sweet tastes will most likely synapse onto a sensory neuron that will carry the information back through the [15] nerve.
All Answer Choices
endolymph
facial
dorsal root ganglia
brain
depolarized
depolarized or hyperpolarized
modified epithelial cells
movement of the head
tastebud
specific sound frequency
generator potential
crista ampullaris hair cells
mechanical bending
olfactory receptor neuron
auditory hair cells
Question 3
Hair cells in the cochlea are [1] by sound, while hair cells in the vestibular organs are [2] by head movements. Either way, the change in potential is due to the action of [3]-gated channels. The stereocilia on the hair cells are [4] to cilia.
All Answer Choices choose one:
depolarized only
hyperpolarized only
depolarized or hyperpolarized
ligand
mechanically
voltage
related
unrelated
Question 4
Head movement is sensed by the _______________ .
Answer Choices:
utricle
saccule
semicircular canals
otolithic membrane
Question 5
High frequency sounds ______________________________ .
Answer Choices:
vibrate the basilar membrane near its base
vibrate the basilar membrane near its middle
vibrate the basilar membrane near its apex
All of the above.
Question 6
Muscles that protect the eardrum from very loud impact sounds are located in the ______________________ .
Answer Choices:
external ear
middle ear
inner ear
spiral organ of Corti
Question 7
Presbycusis is ____________________ .
Answer Choices:
a type of sensorineural deafness common in people over 65 years of age
something that results from an atrophy of the spiral organ
a type of deafness that leads to a loss in the ability to hear high tones
All of the above are correct.
Question 8
Sound wave localization is achieved by the brain calculating _______________________________ .
Answer Choices:
interaural time difference
interaural time difference but not the interaural intensity difference
interaural intensity difference
interaural intensity difference but not the interaural time difference
Question 9
When a hearing test is conducted on both right and left ears which of the following would be expected?
Answer Choices:
Sounds arriving from spots equidistant from both ears arrive with equal loudness at each ear.
Enough information is provided to locate the position of the item making the noise.
This allows for optimal localization of all sound waves being done in this examination.
All of the above are correct.
