What type of muscle tissue are the blood vessels and stomach made of?

The blood vessels and stomach are made of smooth muscle tissue. Smooth muscle tissue is one of three types of muscle tissue, along with skeletal muscle tissue and cardiac muscle tissue. Smooth muscle tissue is involuntary, meaning that it is not under conscious control. It is found in the walls of blood vessels, the gastrointestinal tract, and other internal organs. Smooth muscle tissue contracts and relaxes slowly, and it is responsible for a variety of functions, including the regulation of blood pressure, the movement of food through the digestive system, and the emptying of the bladder.