Final answer:
The muscularis typically consists of two layers of smooth muscle, which is not striated like skeletal or cardiac muscle.
Step-by-step explanation:
The muscularis is a layer in certain organs like the gastrointestinal tract, which generally contains two layers of muscle tissue. These layers are usually made up of smooth muscle, which helps regulate the movement of internal organs. Unlike skeletal muscle and cardiac muscle, smooth muscle is not striated because the cells are arranged in sheets rather than in the bundles like the other two types of muscle tissue, which appear striped or striated due to their cellular arrangement.