Stephanie is in a car accident, flung from her vehicle and landing on her back on
pavement. At the scene, an emergency medical technician checks her Babinski reflex, in
which the great toe extends upward and the smaller toes fan apart.
This reflex
A) may indicate an injury to the corticospinal tract.
B) is meaningless in assessing an emergency situation.
C) is normal in adults.
D) may indicate aging of the corticospinal tract.
A
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