If transduction does not occur, what do you perceive about a stimulus? 1. It is stronger than usual. 2. It is as though the stimulus did not take place and you feel nothing. 3. UV light was not converted into part of the visible spectrum. 4. It is weaker than usual.
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If transduction does not occur, what do you perceive about a stimulus? 1.It is stronger than usual. 2.It is as though the stimulus did not take place and.
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If transduction does not occur, what do you perceive about a stimulus?
1. It is stronger than usual.
2. It is as though the stimulus did not take place and you feel nothing.
3. UV light was not converted into part of the visible spectrum.
4. It is weaker than usual.
Receptor A has a circular receptive field with a diameter of 2.5 cm. Receptor B has a circular
receptive field of 7.0 cm in diameter. Which receptor allows you to more precisely localize a stimulus?
1. Receptor A
2. They would provide the same precision of sensory information
3. Receptor B
4. It would depend upon the location of the receptors
Distinguishing facts concerning tonic receptors include all of the following except:
1. Tonic receptors are always active.
2. The frequency of action potential generation indicates the background level of stimulation.
3. Tonic receptors are active for a short time whenever a change occurs in conditions monitored.
4. When a stimulus increases or decreases, the rate of action potential generation changes.
Which of the following has occurred if you no longer notice the smell of a dirty cat litter box?
1. Peripheral adaptation
2. Anosmia
3. Sensory coding
4. Central adaptation
Which type of general sensory receptor is correctly paired with its function?
1. Mechanoreceptor/detect changes in temperature
2. Chemoreceptors/sensitive to stimuli that distort their cell membranes
3. Thermoreceptors/detect changes in concentration of specific chemicals or compounds
4. None of these is correctly paired
Nociceptors are _____ receptors. To what categories of sensations are nociceptors sensitive?
1. Thermoreceptors/extremes of temperature and changes in vibration
2. Pain/extremes of temperature, mechanical damage and chemicals released from injured cells
3. Pain/changes in pressure or stretch in muscles
4. Chemoreceptors/changes in concentration of chemicals or compounds
A patient who describes their pain as “prickling” is experiencing pain sensations carried by ____.
1. Substance P
2. Unmyelinated Type C fibers
3. Glutamate
4. Myelinated Type A fibers
What type of fibers carry information about itch and tickle sensations?
1. Unmyelinated Type C fibers
2. Myelinated Type A fibers
3. All nociceptors
4. None of these is correct
Which type of tactile receptor gives you the most information about location, size, and shape of the
source of stimulation?
1. Root hair plexus
2. Free nerve endings
3. Tactile (Merkel’s) discs
4. Lamellated (Pacinian) corpuscles
Someone is gently brushing your arm with a feather. Which type of receptor is stimulated?
1. Tactile (Meissner’s) corpuscles
2. Tactile (Merkel’s) discs
3. Root hair plexuses
4. All of the above are correct
Baroreceptors are located in all of the following locations, except _____?
1. Blood vessels
2. Respiratory tract
3. Carotid bodies
4. Digestive tract
What would happen if the information from proprioceptors in your legs were blocked from
reaching the CNS?
1. You would not experience pain sensations from your legs.
2. Your lower limb movements would be uncoordinated.
3. You wouldn’t know position or degree of stretch in tendons of your legs.
4. 2 and 3 are correct.
Which of the following is incorrect concerning chemoreceptors?
1. They exhibit peripheral adaptation over a few seconds.
2. We are not consciously aware of the sensations they provide.
3. Information is routed through the cerebral cortex for control of respiratory and cardiovascular
function.
4. Chemoreceptive neurons are located in the carotid bodies and aortic bodies.
If a sensation is to reach your conscious awareness, there must be a synapse with a ____ in the ____?
1. First-order neuron/thalamus
2. Second-order neuron/primary sensory cortex
3. First-order neuron/dorsal root ganglion
4. Third-order neuron/thalamus
As a result of pressure on her spinal cord, Jill cannot feel touch or pressure on her lower limbs.
Which spinal tract is being compressed?
1. Fasciculus cuneatus
2. Fasciculus gracilis
3. Lateral spinothalamic tract
4. Anterior spinothalamic tract
The ____ carries sensation of highly localized (fine) touch, while the ____ provides conscious sensations of poorly localized (crude) touch?