Welcome to the first lesson of medical terminology! You'll begin the course by exploring root terms, which represent the main meaning of a combined medical term. A combined medical term consists of a root, a prefix, and/or a suffix. As you progress through each lesson of this course, you'll see that it proceeds by "body system," and the first lesson will go over root terms that are associated with the musculoskeletal system. Naturally, it will talk a lot about the muscles, bones, joints, and tendons of the body.