Medical Dictionary

medulla oblongata

noun medulla ob·lon·ga·ta \-ˌäb-ˌlŋ-ˈgät-ə\
plural medulla oblongatas or medullae ob·lon·ga·tae \-ˈgät-ē, -ˈgä-ˌtī\

Medical Definition of MEDULLA OBLONGATA

:  the somewhat pyramidal last part of the vertebrate brain developed from the posterior portion of the hindbrain and continuous posteriorly with the spinal cord, enclosing the fourth ventricle, and containing nuclei associated with most of the cranial nerves, major fiber tracts and decussations that link spinal with higher centers, and various centers mediating the control of involuntary vital functions (as respiration)



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