Covers the 14 systems of the human body and their role and functions both from an individual organ perspective and each system as a whole, as well as what occurs when systems are not functioning properly due to injury, disease, or other causes. Entries cover the development of each body system from birth to full adult growth, as well as adjustments by the body during the senior years.

Provides an introduction to the functions of the human body, including vital information on the musculoskeletal system, the nervous system, the circulatory system, and the digestive system.