Purkinje's tissue is a network of specialized cardiac muscle fibers that are responsible for controlling the rhythm and regularity of heart contractions. These fibers are also known as the Purkinje fibers or Purkinje network. In some cases, the term bundle of His is used interchangeably with Purkinje's tissue, as they both play important roles in regulating the heartbeat. Other synonyms for Purkinje's tissue include subendocardial branches, subendocardial plexus, and bundle branches. Each of these terms refers to the intricate system of fibers that work together to keep the heart beating correctly and efficiently. Understanding the various synonyms for Purkinje's tissue is important in medical terminology and can help patients better understand their own cardiac health.