What is sulcus retro olivaris?

The sulcus retro olivaris is a narrow groove located on the posterolateral surface of the medulla oblongata, a part of the brainstem. It is situated posterior to the olivary body, which is a prominent structure in the medulla that is involved in motor coordination and learning. The sulcus retro olivaris marks the boundary between the inferior cerebellar peduncle and the restiform body, which are two important fibrous tracts that connect the cerebellum to other parts of the brain. The sulcus retro olivaris contains several small blood vessels and nerves that supply the adjacent structures. Dysfunction of the sulcus retro olivaris can lead to various neurological disorders, such as dysarthria, ataxia, and tremors.