The skeleto-muscular system is responsible for allowing movement within the body. In order to provide movement, muscles must work in pairs. For example, in order to curl the bicep upwards, the tricep must be present as this action also requires this muscle. Without these two muscles present, this action would not be possible. This is true of all other muscle pairs within the body.
There are three different types of muscle: striated, smooth and cardiac. Striated muscles covers all voluntary muscle within the body which we have conscious control over. Smooth muscle is involuntary, it is found within the walls of the hallow organs, such as the intestines. Cardiac muscles is strictly confined to the heart, this is an involuntary muscles which works continuously. ‘Cardiac’ derives from the fact that it is directly affected by out cardiovascular fitness. The fitter we are the stronger and larger our heart will be.
Tendons attach the skeletal muscles to the bones. At the full extent is where movement stops. The tendons restrict the body from over exerting itself.
Reference for the image:Anatomy for the Artist.