Smooth muscle tissue is spindle shaped involuntary muscle, arranged in sheets or
layers. There are usually two layers running together, these two layers alternately
contract, changing the size of the organ, for example the biceps. Smooth
Muscle differs from other types because it has no striations, cross-striped muscle fibers.
It is commonly found in hollow organs such as the stomach, the bladder, and the
respiratory passages. Smooth muscles tissue's main function is to propel objects down a
certain path.
Wavelike motions called peristalsis characterize smooth muscle. These motions are the
smooth muscle sheets flexing and relaxing, thus altering the shape of the organ.
