CRCST Chapter 3 Practice Test: Anatomy and Physiology

A working knowledge of human anatomy and physiology helps sterile processing technicians understand why specific instruments exist and how they are used in surgery. This chapter covers the major body systems — skeletal, muscular, cardiovascular, respiratory, nervous, digestive, urinary, and reproductive — with emphasis on the anatomical structures most relevant to surgical intervention. When you understand that the periosteum is the membrane covering bone, you know why a periosteal elevator is designed the way it is. When you understand joint anatomy, the purpose of arthroscopic instruments becomes clear. This knowledge improves your ability to assemble specialty trays correctly, anticipate surgeon needs based on procedure type, and communicate effectively with clinical staff about instrumentation.