Posterolateral sulcus of medulla oblongata

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Brain: Posterolateral sulcus of medulla oblongata
Gray681.png
Hind- and mid-brains; postero-lateral view.
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Section of the medulla oblongata through the lower part of the decussation of the pyramids.
1. Anterior median fissure.
2. Posterior median sulcus.
3. Anterior column (in red), with 3’, anterior root.
4. Posterior column (in blue), with 4’, posterior roots.
5. Lateral cerebrospinal fasciculus.
6. Posterior funiculus.

The red arrow, a, a’, indicates the course the lateral cerebrospinal fasciculus takes at the level of the decussation of the pyramids;
the blue arrow, b, b’, indicates the course which the sensory fibers take.
Latin sulcus posterolateralis medullae oblongatae
Gray's p.768
NeuroNames hier-703

The accessory, vagus, and glossopharyngeal nerves correspond with the posterior nerve roots, and are attached to the bottom of a sulcus named the postero-lateral sulcus (or dorsolateral sulcus).

Additional images[edit]

This article incorporates text from a public domain edition of Gray's Anatomy.