The histological section of pineal gland is comprised of

Retina transmits the information about light-darkness exposure directly to the

Which of the enzyme converts serotonin to N-acetyl serotonin?

When is melatonin secretion inhibited?

Melatonin receptors are found in

Melatonin receptor mediated signaling mechanism is mediated via

Which of these is not a function of melatonin?

The physiological condition resulting from a change of the body's normal circadian rhythm is called

Melatonin secretion is regulated by activation of the

_______ light, principally around 460–480 nm, suppresses melatonin biosynthesis

Which of these factors does not regulate melatonin synthesis?

_______ phosphorylates the penultimate enzyme, the arylalkylamine N-acetyltransferase (AANAT) during melatonin synthesis

Melatonin __________ the secretion of the gonadotropic hormones LH and FSH from the anterior pituitary

Name the amino acid from where melatonin is synthesized