Neural activity in the suprachiasmatic nuclei in rats is
A) greatest during the winter months.
B) lowest during the winter months.
C) constant throughout a 24-hour period.
D) higher at night and lower during the day.
E) higher during the day and lower at night.
Answer: E
Rationale: Neural activity in the suprachiasmatic nuclei in rats is higher during the day and lower at night.
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