Skip to Content

spinal tract of trigeminal nerve

 

Definition: a compact fiber bundle, comma-shaped on transverse section, composed of primary sensory fibers of the portio major of the trigeminal nerve, descending from the level of the entrance of the trigeminus in the upper pons down through the posterolateral region of the rhombencephalic tegmentum along the lateral side of the descending or spinal nucleus of the trigeminus, emerging on the posterolateral surface of the lower medulla oblongata as the trigeminal tubercle (tuberculum cinereum), and continuing as far as the second cervical segment of the spinal cord. Its fibers are distributed to the descending or spinal nucleus of the trigeminus.

Synonym(s): tractus spinalis nervi trigeminiTA, descending tract of trigeminal nerve, tractus descendens nervi trigemini

Disclaimer: This site is designed to offer information for general educational purposes only. The health information furnished on this site and the interactive responses are not intended to be professional advice and are not intended to replace personal consultation with a qualified physician, pharmacist, or other healthcare professional. You must always seek the advice of a professional for questions related to a disease, disease symptoms, and appropriate therapeutic treatments.
© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
Hide