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Clavicular part of pectoralis major: anatomy, location and function

The upper fibres of pectoralis major. Flexes the arm and adducts and medially rotates it.

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Highlighted in the model: Clavicular part of pectoralis major. 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.

Clavicular part of pectoralis major at a glance

What it is
The upper fibres of pectoralis major.
Location
Origin: medial half of the clavicle. Insertion: lateral lip of the intertubercular sulcus of the humerus.
Function
Flexes the arm and adducts and medially rotates it.
Body system
Muscular · paired (left and right)
FMA ID
FMA34690 (Foundational Model of Anatomy)

Key facts

  • Innervation: mainly the lateral pectoral nerve (C5–C7), carrying mostly C5–C6 fibres to this part
  • Blood supply: pectoral branches of the thoracoacromial trunk

Structures next to the clavicular part of pectoralis major

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

References

  1. Foundational Model of Anatomy: Clavicular part of pectoralis major (FMA34690). 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.