Flexor digitorum superficialis
Arms
Deep muscle — it lies under other muscles. X-ray makes the muscles over it see-through.
- Origin
- Medial epicondyle, coronoid process of the ulna and the shaft of the radius
- Insertion
- Middle phalanges of the four fingers
- Action
- Flexes the fingers at the middle joints and assists wrist flexion
- Nerve supply
- Median nerve (C7–T1)
The larger, superficial finger flexor, lying under the other wrist flexors. It bends the middle joints of the four fingers and does much of the work in gripping.