3 Questions
Which of the following is true regarding lesions in the spinothalamic tracts?
They cause impairment in the ability to appreciate pain and temperature on the contralateral side of the body below the level of the lesion.
Which of the following is a symptom of lesions in the posterior column of the spinal cord?
Loss of position and vibration sense on the same side of the body.
What may occur due to thalamic lesions?
Spontaneous pain of most unpleasant quality in the opposite side of the body.
Study Notes
- Lesions in the posterior column of the spinal cord cause loss of position and vibration sense on the same side.
- Sensory ataxia and difficulty standing upright may occur due to the loss of proprioceptive sensations.
- Lesions in the spinothalamic tracts cause impairment in the ability to appreciate pain and temperature on the contralateral side of the body below the level of the lesion.
- Touch is usually modified but not abolished due to its alternative pathway in the posterior columns.
- Lesions in the upper brainstem usually affect all forms of sensation on the contralateral side of the body.
- Lesions of the main sensory nuclei of the thalamus may cause loss of various modalities of sensation on the opposite side of the body.
- Spontaneous pain of most unpleasant quality in the opposite side of the body may occur due to thalamic lesions.
- Sensory ataxia is more marked when the eyes are closed.
- First-order neurons of the proprioceptive nerve fiber may be damaged peripherally, causing similar symptoms associated with other signs of peripheral nerve disease.
- Romberg's test may be used to test for sensory ataxia.
Test your knowledge on sensory pathways and lesions in the nervous system with this quiz! From loss of proprioceptive sensations to impairment in pain and temperature appreciation, this quiz covers various aspects of sensory ataxia and its causes. Sharpen your understanding of the nervous system and its intricate workings by identifying the effects of lesions in different areas of the spinal cord and brainstem. Don't forget to brush up on essential terms like proprioceptive nerve fiber and Romberg's test to ace this quiz!
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