Paul Andersen explains the major elements in the endocrine system. He explains how glands produce hormones which target cells. He differentiates between water-soluble and lipid-soluble hormones. He then describes the hormones and actions of ten glands: pineal, anterior pituitary, posterior pituitary, thyroid, parathyroid, pancreas, adrenal cortex, adrenal medulla, testes, and ovaries. [13:46]