Which term describes muscle tissue that is striped or marked by streaks?

The term that describes muscle tissue that is striped or marked by streaks is "striated." This term specifically refers to the appearance of the muscle fibers, which have alternating light and dark bands visible under a microscope. Striated muscle tissue is characterized by the regular arrangement of actin and myosin filaments, which create this distinctive striped appearance.

Skeletal muscle, while often associated with the term striated because it is indeed a type of striated muscle, specifically refers to the muscle that is attached to the skeleton and is under voluntary control. Cardiac muscle also exhibits striations and is often categorized as striated muscle, but it refers specifically to the muscle found in the heart. Smooth muscle, on the other hand, does not have this striped appearance and is found in various organs, such as the intestines and blood vessels, functioning involuntarily. Thus, "striated" is the best choice for describing the characteristic striped pattern of muscle tissue.