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Anterior leaflet of tricuspid valve: anatomy, location and function

The anterior leaflet is the largest of the three leaflets of the tricuspid valve. It closes the right atrioventricular orifice during ventricular contraction so blood cannot return to the right atrium.

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Highlighted in the model: Anterior leaflet of tricuspid valve. 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.

Anterior leaflet of tricuspid valve at a glance

What it is
The anterior leaflet is the largest of the three leaflets of the tricuspid valve.
Location
The tricuspid valve lies between the right atrium and right ventricle. The anterior leaflet is on the front, near the infundibulum, and its chordae attach mainly to the anterior papillary muscle.
Function
It closes the right atrioventricular orifice during ventricular contraction so blood cannot return to the right atrium.
Body system
Cardiovascular · single, midline structure
FMA ID
FMA7238 (Foundational Model of Anatomy)

Key facts

  • The three leaflets are anterior, posterior and septal.
  • The tricuspid valve is best heard at the lower left sternal border.

Structures next to the anterior leaflet of tricuspid valve

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

References

  1. Foundational Model of Anatomy: Anterior leaflet of tricuspid valve (FMA7238). EMBL-EBI Ontology Lookup Service.
  2. OpenStax. Anatomy and Physiology 2e, §20.1 Structure and Function of Blood Vessels. 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.

Explore the whole body in the interactive 3D human anatomy model, or browse the A–Z list of human structures.