Synonyms
Medulla oblongata
Definition
The medulla is the hindmost portion of the vertebrate brain and the most caudal segment of the brainstem. It contains major ascending and descending fiber tracts, cranial nerve nuclei, and centers that mediate the control of vital autonomic functions.
Current Knowledge
Basic Anatomy
As the lowermost segment of the three-part brainstem, the stalklike medulla is connected rostrally by the pons to the midbrain. At the level of the foramen magnum, it merges caudally with the spinal cord. Sulci and fissures on the surface of the cord extend rostrally over the medulla. Ventrally, the anterolateral sulcus separates the pyramids (medial) from the olivary bodies (lateral). The medulla is divided into two portions, open and closed, as determined by its relationship with the fourth ventricle. The dorsal aspect of the rostral medulla, the open portion, partially encloses the fourth ventricle. The closed medulla is located caudally below the level of the obex...
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsAuthor information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer International Publishing AG, part of Springer Nature
About this entry
Cite this entry
Chow, W.N. (2018). Medulla. In: Kreutzer, J.S., DeLuca, J., Caplan, B. (eds) Encyclopedia of Clinical Neuropsychology. Springer, Cham. https://doi.org/10.1007/978-3-319-57111-9_332
Download citation
DOI: https://doi.org/10.1007/978-3-319-57111-9_332
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-57110-2
Online ISBN: 978-3-319-57111-9
eBook Packages: Behavioral Science and PsychologyReference Module Humanities and Social SciencesReference Module Business, Economics and Social Sciences