Marieb, E. N., & Keller, S. M. (2018). Essentials of human anatomy and physiology (12th ed.). Glenview, IL: Pearson. Chapter 7, “The Nervous System” In this chapter, you once again begin at the microscopic level, studying how a single nerve cell triggers an impulse. You then study the organization of the nervous system, including the central and peripheral nervous systems. Chapter 8, “Special Senses” In this chapter, you study the five “special senses”: vision, hearing, smell, taste, and balance. You explore the anatomy and function of the “special sense receptors” that characterize each. Chapter 9, “The Endocrine System” In this chapter, you explore the structure and function of the endocrine system. Focus on the roles played by hormones, as well as the organs and glands that secrete those hormones.