Multiple Choice
Which type of receptor is not a mechanoreceptor?
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13. The Peripheral Nervous System
Sensory Receptor Classification by Modality
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In the classification of sensory receptors by modality, how many sensory modalities can a single sensory neuron encode?
A
Two modalities simultaneously (e.g., touch and temperature)
B
Three modalities (touch, temperature, and pain)
C
One modality
D
An unlimited number of modalities depending on stimulus intensity
Verified step by step guidance1
Understand that sensory neurons are specialized to respond to specific types of stimuli, which are called sensory modalities (e.g., touch, temperature, pain).
Recognize that each sensory neuron has receptors that are tuned to a particular modality, meaning it can only detect and encode one type of sensory information.
Recall the concept of labeled lines in sensory physiology, which states that each sensory neuron transmits information about only one modality to the brain.
Consider that while a neuron can vary its firing rate to indicate stimulus intensity, it does not encode multiple modalities simultaneously.
Conclude that a single sensory neuron encodes only one sensory modality, not multiple modalities at the same time.
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