Pictures of body muscle may be viewed online at PTDirect.com and at the American Medical Association's website. Both websites contain multiple anatomical diagrams of the human muscular system.
PTDirect is a website focused on physical training, and its webpage on body muscle contains several images. The illustrations are organized into groups based on location: namely, muscles of the limbs, trunk, back, and ribs. Each group receives its own chart.
The American Medical Association, on the other hand, hosts an atlas of the human body that displays the muscular system as a whole. Front and back views of the entire human body muscle may be viewed on separate webpages of the site. A side view is also available.