What type of muscle is found inside many internal organs of the body?

Smooth muscle is the correct answer because it is the type of muscle tissue that lines the walls of many internal organs, such as the intestines, blood vessels, and the bladder. Unlike skeletal muscles, which are striated and under voluntary control, smooth muscle is non-striated and operates involuntarily. This means that smooth muscle contractions are controlled by the autonomic nervous system and are responsible for functions such as regulating blood flow, moving food through the digestive tract, and controlling bladder contractions.

Skeletal muscle, on the other hand, is attached to bones and is responsible for voluntary movements of the body. Cardiac muscle is specialized muscle found only in the heart, responsible for pumping blood and is also involuntary. Striated muscle refers generally to any muscle that has a banded appearance, which includes both skeletal and cardiac muscle, but does not specifically define the smooth muscle type present in many internal organs. Hence, smooth muscle is uniquely suited for the function it performs within various internal systems.