Extensor digiti minimi at a glance
- What it is
- An extensor of the little finger.
- Location
- Origin: common extensor tendon. Insertion: extensor expansion of the 5th digit.
- Function
- Extends the little finger.
- Body system
- Muscular · paired (left and right)
- FMA ID
- FMA38504 (Foundational Model of Anatomy)
Key facts
- Innervation: posterior interosseous nerve (C7–C8)
- Its tendon runs alone in the fifth dorsal compartment, over the distal radio-ulnar joint, and is often doubled.
- It allows the little finger to be extended independently of the others.
Structures next to the extensor digiti minimi
The nearest named structures in the 3D model, measured from the centre of each part:
- Palmaris longus · muscular
- Interosseous membrane of forearm · skeletal
- Ulnar artery · cardiovascular
- Radial artery · cardiovascular
- Abductor pollicis longus · muscular
- Extensor carpi ulnaris · muscular
- Flexor digitorum superficialis · muscular
- Median antebrachial vein · cardiovascular
- Flexor carpi radialis · muscular
- Ulnar vein · cardiovascular
References
- Foundational Model of Anatomy: Extensor digiti minimi (FMA38504). EMBL-EBI Ontology Lookup Service.
- OpenStax. Anatomy and Physiology 2e, §11.2 Naming Skeletal Muscles. Rice University, 2022.
- Mitsuhashi N. et al. (2009). BodyParts3D: 3D structure database for anatomical concepts. Nucleic Acids Research 37, D782–D785. Data © The Database Center for Life Science, CC BY 4.0.
Related anatomy
Explore the whole body in the interactive 3D human anatomy model, or browse the A–Z list of human structures.