Introduction

Figure 27.1 The endocrine system regulates all biological processes related to development of the brain and nervous system, reproduction, growth, and metabolism. (attribution: Copyright Rice University, OpenStax, under CC BY 4.0 license)

Chapter Outline

27.1 Introduction to the Thyroid and Parathyroid

27.2 Thyroid and Antithyroid Drugs

27.3 Calcium Preparations, Vitamin D, Bisphosphonates, Calcimimetics, and Peptide Hormones

The endocrine system influences almost every cell in the body. Several organs and glands comprise the endocrine system, which acts as a messenger system within the body. Endocrine glands release chemicals called hormones directly into the bloodstream. These hormones control processes that occur within the body. Endocrine hormones help to coordinate bodily functions such as emotions, growth, metabolism, mood, sexual function, and sleep. This chapter will introduce and focus on the thyroid and parathyroid glands.