A picture depicting the anatomy of the muscular system, the figure on the left depicting the anterior view while the one on the right depicting the posterior view. (World of Anatomy and Physiology, 2010)
Microstructure of a muscle cell showing the association of the sarcoplasmic reticulum and the myofibrils inside it. (Biology, 2010)
This picture shows the muscles in the human body: triangular muscles, circular ring-shaped muscles, flat muscles, spindle-shaped muscles, cardiac muscle fibers, perimysium, skeletal muscle fibers, and smooth muscle fibers. (Gale Science in Context, 2010)
A transverse cut (cross-section) through healthy muscle tissue. (Genetics, 2010)