all about smooth muscle in points
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- Smooth muscle is found in the walls of hollow organs like your intestines and stomach. They work automatically without you being aware of them. Smooth muscles are involved in many 'housekeeping' functions of the body. The muscular walls of your intestines contract to push food through your body.
- Functions of Smooth Muscles
- The smooth muscle in the uterus helps a woman to push out her baby. In the bladder, smooth muscle helps to push out urine. Smooth muscle determines the flow of blood in the arteries. Smooth muscles move food through the digestive tract.
- Smooth muscle is a type of muscle tissue which is used by various systems to apply pressure to vessels and organs. Smooth muscle is composed of sheets or strands of smooth muscle cells. These cells have fibers of actin and myosin which run through the cell and are supported by a framework of other proteins.
- Smooth muscle cells are spindle-shaped and contain a single central nucleus. They range from 10 to 600 μm (micrometers) in length, and are the smallest type of muscle cell.
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