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Questions and Answers
Which of the following statements is true regarding the spinocerebellar tracts?
Which of the following statements is true regarding the spinocerebellar tracts?
- The ventral tract has uncrossed fibers and causes unilateral loss of conscious kinesthetic sensation when lesioned on the same side
- Lesion of the ventral tract leads to loss of conscious kinesthetic sensation in the opposite side (correct)
- The majority of fibers in the dorsal tract cross the midline and ascend in the lateral white column of the opposite side
- The dorsal tract contains both crossed and uncrossed fibers.
What is the pathway of the dorsal spinocerebellar tract?
What is the pathway of the dorsal spinocerebellar tract?
- It ascends through other spinal segments and reaches the cerebellum through the superior cerebellar peduncle
- It contains both crossed and uncrossed fibers.
- It causes unilateral loss of subconscious kinesthetic sensation when lesioned on the same side
- It reaches the cerebellum through the inferior cerebellar peduncle (correct)
Which of the following is a characteristic of the ventral spinocerebellar tract?
Which of the following is a characteristic of the ventral spinocerebellar tract?
- The majority of fibers in this tract cross the midline and ascend in the lateral white column of the same side (correct)
- Lesion of this tract leads to loss of conscious kinesthetic sensation in the same side
- It reaches the cerebellum through the inferior cerebellar peduncle
- It contains only uncrossed fibers.
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Study Notes
- There are two spinocerebellar tracts: dorsal and ventral.
- The dorsal tract has uncrossed fibers and causes unilateral loss of subconscious kinesthetic sensation when lesioned on the same side.
- The dorsal tract ascends through other spinal segments and reaches the cerebellum through the inferior cerebellar peduncle.
- The ventral tract contains both crossed and uncrossed fibers.
- The majority of fibers in the ventral tract cross the midline and ascend in the lateral white column of the opposite side.
- Some fibers in the ventral tract ascend in the lateral white column of the same side.
- Lesion of the ventral tract leads to loss of subconscious kinesthetic sensation in the opposite side.
- The ventral tract reaches the cerebellum through the superior cerebellar peduncle.
- Both tracts involve second order neurons.
- The cerebellum receives sensory input from both tracts.
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