Q. Consider the following statements:

1. Serotonin is secreted by Pituitary glands.
2. Serotonin plays a key role in regulating mood, sleep, appetite, and other essential functions of the human body.

Which of the statements given above is/are correct?
Answer: Only 2
Notes: Serotonin is a neurotransmitter mainly produced in the gastrointestinal tract and the central nervous system, not by the pituitary gland. It influences mood, sleep, appetite, and various other functions. The pituitary gland does not secrete serotonin; it primarily releases hormones such as ACTH, FSH, TSH, and LH. Therefore, only statement 2 is correct.