Tuesday October 27, 1998 - Question 4

Which of the following statements regarding melatonin is correct?

A) Melatonin is a natural hormone secreted by the pancreas.
B) Melatonin secretion is stimulated by light and is inhibited by dark conditions.
C) Melatonin is thought to function in the regulation of sleep cycles, hormonal rhythms and body temperature.
D) Highest blood levels of melatonin usually occur during the daytime hours.
E) Endogenous production rate of melatonin is about 10 grams/day.
 
 

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