A professionally created set of slides strengthens viewers' knowledge of the muscular system. Some slides display microscope enlargements of muscle fibers and neurons, while others are beautifully detailed graphic images. The difference between voluntary and involuntary muscles is explained. Other concepts that are introduced include tendons and reflexes. For homework, consider having learners log in and view the slides at home. They can take notes, take the quiz, and print out their scores to turn in. Make sure to click See All Related Jams to link to other human body system resources.