5.1 Muscles
5.2 Muscle cell types
5.3 Why are we good at running?
5.4. Striated muscle tissue
5.5 Smooth muscle tissue
5.6 Myocardial tissue
5.7 Adjusting muscle strength
5.8 Muscle contraction
5.9 The effect of muscle training on the muscular system
5.10 Muscles in sports