Exploring Anatomic Variants to Enhance Anatomy Teaching: Musculus Sternalis.

The opportunity to encounter and appreciate the range of human variation in anatomic structures-and its potential impact on related structures, function, and treatment-is one of the chief benefits of cadaveric dissection for students in clinical preprofessional programs. The dissection lab is also where students can examine unusual anatomic variants that may not be included in their textbooks, lab manuals, or other course materials. For students specializing in physical medicine, awareness and understanding of muscle variants has a practical relevance to their preparations for clinical practice.