Muscles for Locomotion - Section 34.3 

www.interactive... - What would the skeletal system be without muscles to move our bones. Muscles are an essential part of what makes us humans and in this lecture, I talk about the three types of muscle, and more importantly, how they work. How does muscle contraction happen at the cellular level? Why does the heart beat on its own? What is actin and myosin and what happens to our muscles in response to exercise? These are a few of the questions I answer in this lecture.
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