trigeminal tubercle

(redirected from ashen tubercle)

trigeminal tubercle

[TA]
a longitudinal prominence on the posterolateral surface of the medulla oblongata along the lateral border of the cuneate tubercle; it is the surface profile of the spinal tract of trigeminal nerve, continuous caudally with the posterolateral (dorsolateral) fasciculus (Lissauer tract).
Synonym(s): tuberculum trigeminale [TA], ashen tubercle, gray tubercle, Rolando tubercle
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