Supramarginal gyrus at a glance
- What it is
- The supramarginal gyrus is part of the inferior parietal lobule that arches over the end of the lateral sulcus.
- Location
- It lies in the inferior parietal lobule, above the posterior ramus of the lateral sulcus (Brodmann area 40).
- Function
- It is involved in somatosensory association, phonological processing and language, and in the perception of body space.
- Body system
- Nervous · paired (left and right)
- FMA ID
- FMA72668 (Foundational Model of Anatomy)
Key facts
- Lies anterior to the angular gyrus.
- It caps the upturned end of the posterior ramus of the lateral sulcus.
- It is supplied by the middle cerebral artery (anterior and posterior parietal branches).
Clinical relevance
Lesions of the dominant side may contribute to conduction aphasia or apraxia.
Structures next to the supramarginal gyrus
The nearest named structures in the 3D model, measured from the centre of each part:
- Parietal bone · skeletal
- Postcentral gyrus · nervous
- Precentral gyrus · nervous
- Posterior part of superior temporal gyrus · nervous
- White matter of cerebral hemisphere · nervous
- Angular gyrus · nervous
- Lateral ventricle · nervous
- Superior parietal lobule · nervous
- Insula · nervous
- Medial occipital artery · cardiovascular
References
- Foundational Model of Anatomy: Supramarginal gyrus (FMA72668). EMBL-EBI Ontology Lookup Service.
- OpenStax. Anatomy and Physiology 2e, §12.1 Basic Structure and Function of the Nervous System. Rice University, 2022.
- 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.