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Transverse part of trapezius: anatomy, location and function

The middle fibers of trapezius, running horizontally. Retracts the scapula.

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Highlighted in the model: Transverse part of trapezius. 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.

Transverse part of trapezius at a glance

What it is
The middle fibers of trapezius, running horizontally.
Location
Originates from the spinous processes of C7 to T3 and inserts onto the acromion and spine of the scapula.
Function
Retracts the scapula.
Body system
Muscular · paired (left and right)
FMA ID
FMA33584 (Foundational Model of Anatomy)

Key facts

  • Innervation: spinal accessory nerve (CN XI) with C3–C4
  • Blood supply: superficial branch of the transverse cervical artery

Structures next to the transverse part of trapezius

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

References

  1. Foundational Model of Anatomy: Transverse part of trapezius (FMA33584). 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.