As the title implies, this video describes how muscles work. It shows the anatomy of the muscle in relation to bone but also the structure of muscle at the microscopic level.

This video shows an animation of the normal anatomy of bone and what occurs to bone that is affected by osteoporosis. It also explains why osteoporosis is more likely in to occur in women and as we age.

Knee joints or finger joints are fairly easy to understand--they facilitate back and forth movement; however, anywhere that two bones meet in the body there is some sort of joint. This animation describes the different joints in the body and what anatomical structures make up joints.

The Achilles tendon is the major tendon that connects the lower leg to the foot. Without your Achilles tendon, you would not be able to point your foot or walk effectively. This narrated animation describes how tears in the Achilles tendon are repaired surgically.