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Vastus lateralis: anatomy, location and function

The largest quadriceps muscle on the lateral thigh. Extends the leg at the knee.

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Highlighted in the model: Vastus lateralis. 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.

Vastus lateralis at a glance

What it is
The largest quadriceps muscle on the lateral thigh.
Location
Originates from the greater trochanter and lateral lip of the linea aspera and inserts into the quadriceps tendon and lateral border of the patella.
Function
Extends the leg at the knee.
Body system
Muscular · paired (left and right)
FMA ID
FMA38930 (Foundational Model of Anatomy)

Key facts

  • Innervation: femoral nerve (L2–L4)
  • Blood supply: descending branch of the lateral circumflex femoral artery

Clinical relevance

It is a common site for intramuscular injections.

Structures next to the vastus lateralis

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

References

  1. Foundational Model of Anatomy: Vastus lateralis (FMA38930). 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.