Which organ filters waste from the blood? What is the term given to the loss of bone that often occurs with age? What causes a muscle strain? What is the longest nerve in the human body? In this Anatomy and Physiology Quiz you will learn new facts and test your knowledge of anatomy, physiology, body systems, organs, medicine, etc. Questions and answers are shuffled randomly every time you play. You can skip a question, if you don't know the answer. Play multiplayer one on one with your friends!