Muscles are attached to the bone by tendons and work in pairs to allow for smooth movement. To move a joint ... students could make a model of a human arm using card for the bones and string ...

Skeletons can be remarkably flexible but muscles are needed to move them. Various sports competitors and athletes are seen in action using their muscles. Muscles are used every time we move.

Now, using high-precision X-ray imaging to track spine movements during ... the dynamic model will capture subtle but ...