What type of muscle is responsible for the movement of internal organs?

Smooth muscle is the type responsible for the movement of internal organs. This type of muscle is found in the walls of hollow organs such as the intestines, bladder, and blood vessels. Smooth muscle operates involuntarily, meaning it functions without conscious control, which is essential for regulating processes like digestion and blood circulation.

In contrast, skeletal muscle is attached to bones and is responsible for voluntary movements, allowing you to control activities like walking or lifting objects. Cardiac muscle, found only in the heart, also operates involuntarily but is specifically designed for the rhythmic contractions that pump blood. The term "voluntary" relates to skeletal muscle, reinforcing the distinction between the types of muscle based on their control and function. Thus, smooth muscle plays a crucial role in maintaining internal bodily functions through its involuntary contractions.