Q. Pineal gland of human brain secretes melatonin concerned with
A) Anger
B) Body temperature
C) Colouration of skin
D) Sleep
Explanation
Pineal gland secretes two hormones – melatonin and serotonin. Melatonin concentration in the blood appears to flow a diurnal cycle.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.