Medulla Oblongata Definition

ŏblông-gätə
medulla-oblongata
noun
The widening continuation of the spinal cord, forming the lowest part of the brain and containing nerve centers that control breathing, circulation, etc.
Webster's New World

The lower portion of the brainstem.

Wiktionary
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Origin of Medulla Oblongata

  • New Latin medulla oblongāta Latin medulla medulla New Latin oblongāta feminine of oblongātus oblong

    From American Heritage Dictionary of the English Language, 5th Edition

Medulla Oblongata Sentence Examples

  • Forwards it covers, and has driven asunder, the optic lobes; backwards it hides the much shortened medulla oblongata.

  • The action of aconitine on the circulation is due to an initial stimulation of the cardio-inhibitory centre in the medulla oblongata (at the root of the vagus nerves), and later to a directly toxic influence on the nerve-ganglia and muscular fibres of the heart itself.

  • Consciousness is entirely unaffected by physostigmine, there being apparently no action on any part of the brain above the medulla oblongata.

  • The cerebral convolutions remain unaffected, but the important centres of the medulla oblongata are stimulated.

  • As the vaso-motor centre in the medulla oblongata is also stimulated, as well as the contractions of the heart, there is thus trebly caused a very great rise in the blood-pressure.

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