Final answer:
Smooth muscles are found in the wall of the stomach, wall of the uterus, and wall of the bladder. They perform involuntary functions in the body, unlike the wall of the heart, which contains cardiac muscle.
Step-by-step explanation:
Smooth muscle tissue, also known as involuntary muscle, is present in the walls of organs like the stomach, uterus, bladder, and heart.
Smooth muscle is also found in passageways such as arteries, veins, respiratory tract, and urinary tract. In addition, it is found in the eyes, where it changes the size of the iris and alters the shape of the lens, and in the skin, where it causes hair to stand erect.
Smooth muscle has no striations, is tapered at both ends and is not under voluntary control.
Structures that possess smooth muscles include the wall of the stomach, the wall of the uterus, and the wall of the bladder. These organs are lined with smooth muscle tissue, which is not under voluntary control, has no striations, and is responsible for various involuntary movements within the body, such as the propulsion of food through the digestive system, contraction during childbirth, and controlling the release of urine. The wall of the heart, however, is made up of cardiac muscle and not smooth muscle.