Smooth Muscle Fibers

Smooth muscle fibers are a type of muscle found in many internal organs, such as the stomach, intestines, blood vessels, and the bladder. Unlike skeletal muscles that move the bones, smooth muscles work involuntarily, meaning they operate automatically without conscious effort. They are made of long, spindle-shaped cells that contract slowly and efficiently to regulate functions like digestion, blood flow, and urine flow. These muscles are essential for maintaining various automatic body processes, providing the constant, gentle movement needed for organs to perform their roles effectively.