Multiple choice

_______ plays a very important role in the regulation of the 24-hour (diurnal) rhythm of our body.

  1. Thyroxine

  2. Thymosin

  3. Melatonin

  4. Glucagon

  5. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Melatonin controls the night-day cycle, thereby allowing regulation of 24 hour rhythm of our body.