Here are some quick tips on how to distinguish classic crystal from plain glass. 1  Hold up a glass to the light. 2  If the glass acts as a prism and you see a rainbow you are holding crystal.
Growth is a very complex process, and requires the coordinated action of several hormones. The major role of growth hormone in stimulating body growth is to stimulate the liver and other tissues to secrete IGF-I. IGF-I stimulates proliferation of chondrocytes (cartilage cells), resulting in bone growth.
The thyroid produces hormones that influence every organ, tissue, and cell in the body. Thyroid hormones also control heart rate, body weight, body temperature, energy level, muscle strength and menstrual regularity. When the thyroid becomes faulty or malfunctions, metabolic disorders occur.