Muscles and the chemicals myosin and actin are described in the sliding filament theory by Paul Andersen using pictures on his Smart Board. Give your young scientists a clear idea of muscle contraction by showing this video.

Previous videos have dealt with the proteins that produce mechanical motion and how nerves stimulate contraction. But this presentation explains, on a gross anatomical scale, how skeletal muscle is structured.

Did you know your blood and bones are examples of connective tissue? This is video number five in a series of 47 and further explores connective tissues. Pupils learn about other types of connective tissues, what these look like, where...

Wanna know what makes people smile? Face muscles. In this short video, learners have an opportunity to view what muscles look like and how they provide humans with movement by contracting and relaxing.  

Discover the importance of your skeleton. Its different purposes are described and the various types of bones are shown. The animation in this clip clearly introduces the human skeletal system and its parts. A great resource for your...

A slide show on the muscular system is narrated, discussing the types of muscles and their functions. The muscle is shown in all its parts; the narrator briefly touches on filaments and contraction.

Today Hank wraps up our look at Connective Tissues with a discussion of the various types and a breakdown of what you can and can't easily break down. [9:42]

This video presents the structure and functions of ligaments, joints, and tendons. [2:47]