In this live-action program viewers will learn that the thyroid is a large ductless gland and its primary function is to secrete hormones that regulate the rate of the metabolism and hence growth and development. Students will come to understand The thyroid makes and stores thyroid hormones, and releases them into the blood. The two main hormones, called T3 and T4, affect almost every cell in the body and therefore help control the body's functions. They will discover that the production of thyroid hormone is controlled by the pituitary gland, located in the brain. The program discusses that Hyperthyroidism is a condition caused by the production of too much thyroid hormone and Insufficient hormone production, in contrast, leads to hypothyroidism.