What muscle internal organs contain?

The muscle present in internal organs is called smooth muscle. It is one of the three types of muscles in the human body, along with skeletal and cardiac muscles. Unlike skeletal muscle, which you can consciously control, smooth muscle is involuntary. This means it works without you having to think about it. Smooth muscle is located in the walls of your: - Blood vessels - Lungs - Stomach - Intestines - Urinary tract - Reproductive organs It controls: - The flow of blood - The movement of air in and out of your lungs - Digestion of food - Elimination of waste products - Reproduction Smooth muscle is also responsible for: - Constricting your pupils when there is too much light - Opening and closing your airways - Emptying your bladder - Ejaculating semen Smooth muscle is controlled by the autonomic nervous system, which is the part of your nervous system that regulates bodily functions you don't have to consciously think about.