10 Questions
Which ascending tract is responsible for transmitting pain and temperature sensations from the trunk and limbs?
Lateral spinothalamic tract
Where do cranial nerve sensory ganglions for the face and head serve as 1st order neurons in conscious somatosensory pathways?
Dorsal root ganglion
Which type of pain is characterized by being sharp and well-localized?
Fast pain
In the somatosensory system, which type of receptors are distributed all over the body and not concentrated at specific locations?
General somatic afferent (GSA)
Which category of somatosensory modalities involves responding to tissue injury with dull, aching, and burning sensations?
Slow pain
Where are the receptors for special senses like taste and smell located?
In specialized sense organs
What is the function of the spinoreticular tract in the somatosensory pathway?
Causes alertness and arousal in response to painful stimuli
Which receptor is responsible for detecting pain and temperature sensations in the lateral spinothalamic tract?
Free nerve ending
Where does the lateral spinothalamic tract cross over to the opposite side of the body?
Anterior white commissure
What sensory loss occurs on the contralateral side when there is damage to the anterior spinothalamic tract?
Loss of pain and temperature sensations
Test your knowledge on the organization of the somatosensory system, including major modalities, receptors, sensory nerve fibers, pathways, and common disorders. Taught by Assist. Prof. Benjamart Pratoomthai, Ph.D.
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