Multiple choice Which of the following glands helps in onsetting puberty? Thyroid gland Pineal body Adrenal gland Pituitary gland Reveal answer Fill a bubble to check yourself D Correct answer Explanation The pituitary gland is about the size of a pea. It is a protrusion off the bottom of the hypothalamus at the base of the brain. Hormones secreted from the pituitary gland help to get puberty started in humans.