Multiple choice

Which of the following hormones regulates circadian rhythms and also influences pigmentation?

  1. Luteinizing hormone

  2. Melatonin

  3. Thymosin

  4. Vasopressin

  5. Parathormone

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

Melatonin is secreted by the pineal gland and regulates circadian rhythms, and also influences pigmentation.