In anatomy, relating to both the corpus callosum and the marginal structures of the brain, especially a major sulcus in the cerebral cortex.
Compound of 'callosal' (relating to corpus callosum) plus 'marginal' (relating to edges or borders). This anatomical term emerged in 19th-century neuroscience.
The callosomarginal sulcus is like a landmark map on the brain's surface—neurosurgeons use it to navigate during brain surgery, and its exact shape and position varies enough between individuals to help identify unique brain patterns.
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