Striated muscle tissue is a form of fibers that are combined into parallel fibers. More specifically, it can refer to:

• Cardiac muscle
  Cardiac muscle
  Cardiac muscle is a type of involuntary striated muscle found in the walls and histologic foundation of the heart, specifically the myocardium. Cardiac muscle is one of three major types of muscle, the others being skeletal and smooth muscle...
  
   (cardiac refers to the heart
  Heart
  The heart is a myogenic muscular organ found in all animals with a circulatory system , that is responsible for pumping blood throughout the blood vessels by repeated, rhythmic contractions...
  
  ).
• Skeletal muscle
  Skeletal muscle
  Skeletal muscle is a form of striated muscle tissue existing under control of the somatic nervous system- i.e. it is voluntarily controlled. It is one of three major muscle types, the others being cardiac and smooth muscle...
  
  
• Branchiomeric muscles (embryologically different from skeletal muscle)

In practice, the term "striated muscle" is sometimes used to refer exclusively to skeletal muscle when distinguishing it from smooth muscle

Smooth muscle

Smooth muscle is an involuntary non-striated muscle. It is divided into two sub-groups; the single-unit and multiunit smooth muscle. Within single-unit smooth muscle tissues, the autonomic nervous system innervates a single cell within a sheet or bundle and the action potential is propagated by...

. However, different medical dictionaries report different usages of the terms. Cardiac muscle is a different type of muscle, but has almost the same structure as skeletal muscle.