Which of the following signs is characteristic of damage to the corticospinal (pyramidal) system?
  1. Babinski sign
  2. flaccid paralysis and hypotonia
  3. immediate muscle degeneration and atrophy
  4. intention tremor
Explanation
Answer: A - The Babinski sign (dorsiflexion of the great toe in response to stroking the plantar aspect of the foot) is a characteristic sign of pyramidal tract involvement
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