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The Endocrine System shows the location of glands on the body. Each gland is separately illustrated and labeled and the hormones it secrets are listed. Shows the following glands: thyroid parathyroid thymus adrenal pineal pituitary Also includes the organs that have a secondary endocrine function producing and releasing hormones. The heart, kidney, stomach, duodenum, jejunum, pancreas, ovary, placenta, and testes and the hormones they secret are shown.