In this animated activity, learners examine muscle cell contraction and relaxation and consider the role of calcium ions.

In this colorful and interactive object, learners examine the structure and function of muscle and connective tissues. A quiz completes the activity.

In this screencast, learners read descriptions of the actions of the superficial skeletal muscles and see their locations.

In this animated object, learners examine the various connective tissue layers of the muscle organ. The terms "prime mover," "synergist," "antagonist," "origin," and "insertion" are defined.

In this interactive object, learners sort veterinary muscle function medications into categories.

In this screencast, learners will match the muscle names to their corresponding locations in the human body.

In this screencast, students identify various muscles of the face and scalp and see them in action.

In this learning activity you'll review the structure and function of the different tissues of the human body.

In this animated object, learners examine the major events that occur at the neuromuscular junction.