Class notes BIO 123 (2114) Anatomy & Physiology, ISBN: 9780135168042

In chapter 15, learn how one of the two body's major control systems, The Endocrine, operates. From the chemical structure of a hormone to how a hormone acts through messengers by activating specific genes. This chapter also explains how thyroid glands work and how organs secrete hormones. In chapter 16, The functions of blood, such as transportation, regulation and protection, are discussed. The crucial role of erythrocytes in transporting oxygen and carbon dioxide is explained. Other components of blood in the body are also mentioned in this chapter, like leukocytes, platelets, hemostasis transfusion and more. In chapter 17, this portion of the notes dives into the cardiovascular system: the heart. It talks about the four chambers and heart valves that flow blood. Other topics are the cardiac cycle and the different channels taken to get blood through the body, starting from the atrium ventricle. In chapter 18, this chapter focuses again on the cardiovascular system but more specifically on blood vessels. The structure and function of blood vessels are described along with the physiology of circulation.