Flexor Digitorum Superficialis Muscle

The flexor digitorum superficialis muscle is a large muscle that runs along the bottom of the forearm from all the bones at the elbow to the four fingers. It serves to flex or curl the fingers. A flexor muscle is one that decreases the angle between two bones, as in bending the arm at the elbow; raising the leg toward the stomach as in kicking a football; or bringing the lower leg up toward the thigh.