Medical Dictionary
medulla oblongata
noun medulla ob·lon·ga·ta \-ˌäb-ˌlȯŋ-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)
Illustration of MEDULLA OBLONGATA
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