The Muscle diagram highlights the muscles of the Human anatomy – from the front showing a labelled diagram of human muscles from neck to a diagram of leg muscles ….

400px-Muscles_anterior_labeled

Here is a muscles diagram from the rear:

400px-Muscle_posterior_labeled

The cross-sectional area of a muscle (rather than volume or length) determines the amount of force it can generate by defining the number of sarcomeres which can operate in parallel. A sarcomere is the basic unit of a muscle’s cross-striated myofibril (filaments that run from one end of the cell to the other and are attached to the cell surface membrane at each end). Sarcomeres are multi-protein complexes composed of three different filament systems.

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