Which type of muscle is found in the wall of hollow organs? unitary smooth muscle skeletal muscle multi unit smooth muscle cardiac muscle

Unitary smooth muscle is primarily responsible for the contraction of hollow organs like the intestines and bladder. This type of muscle allows for coordinated contractions, creating a rhythmic wave-like motion called peristalsis, crucial for moving substances through the digestive system. On the other hand, multi-unit smooth muscle is found in places where finer control is needed, such as in the eye’s iris or the walls of blood vessels. Unlike unitary smooth muscle, multi-unit smooth muscle consists of fibers that operate independently, allowing for precise adjustments in response to stimulus.