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Opponens digiti minimi of hand: anatomy, location and function

A hypothenar muscle that deepens the hollow of the palm on the little finger side. Draws the fifth metacarpal forward and rotates it, cupping the palm and opposing the little finger toward the thumb.

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Highlighted in the model: Opponens digiti minimi of hand. Click any part to read about it, or switch off “Highlight topic” to see the whole body. 3D data: BodyParts3D, © The Database Center for Life Science, CC BY 4.0; meshes simplified and recoloured. The model is an adult male.

Opponens digiti minimi of hand at a glance

What it is
A hypothenar muscle that deepens the hollow of the palm on the little finger side.
Location
Originates from the hook of the hamate and the flexor retinaculum and inserts along the medial border of the shaft of the fifth metacarpal.
Function
Draws the fifth metacarpal forward and rotates it, cupping the palm and opposing the little finger toward the thumb.
Body system
Muscular · paired (left and right)
FMA ID
FMA37400 (Foundational Model of Anatomy)

Key facts

  • Innervation: deep branch of the ulnar nerve (C8–T1)
  • Blood supply: ulnar artery

Structures next to the opponens digiti minimi of hand

The nearest named structures in the 3D model, measured from the centre of each part:

References

  1. Foundational Model of Anatomy: Opponens digiti minimi of hand (FMA37400). EMBL-EBI Ontology Lookup Service.
  2. OpenStax. Anatomy and Physiology 2e, §11.2 Naming Skeletal Muscles. Rice University, 2022.
  3. 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.