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    Biology The Dynamic Science Study Set 1
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    Exam 42: The Endocrine System
  5. Question
    Biological Rhythms and the Onset of Sleep Are Regulated by ____
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Biological Rhythms and the Onset of Sleep Are Regulated by ____

Question 72

Question 72

Multiple Choice

Biological rhythms and the onset of sleep are regulated by ____ produced by the ____.


A) cortisol; pineal gland
B) melatonin; pituitary gland
C) parathyroid hormone; parathyroid gland
D) melatonin; pineal gland
E) cortisol; adrenal gland

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