medulla oblongata

noun

medulla ob·​lon·​ga·​ta -ˌä-ˌblȯŋ-ˈgä-tə How to pronounce medulla oblongata (audio)
plural medulla oblongatas or medullae oblongatae -ˌä-ˌblȯŋ-ˈgä-tē How to pronounce medulla oblongata (audio)
-ˌtī
: the part of the vertebrate brain that is continuous posteriorly with the spinal cord and that contains the centers controlling involuntary vital functions see brain illustration

Examples of medulla oblongata in a Sentence

Recent Examples on the Web The library nearly resembles the shape of a brain, with the entrance being the medulla oblongata and the robust flooring as the cerebellum. Rajvinder Singh, Los Angeles Times, 6 Jan. 2023 Regardless of what underlies it, the sensation of nausea originates in the medulla oblongata, a part of your brain that sits just above your spinal cord. Patrick Wilson, Outside Online, 13 Apr. 2020 Another part of the brain, the medulla oblongata, gets in touch with the heart, which increases its rate and the amount of blood pumped per beat. Elizabeth Pennisi, Science | AAAS, 12 Nov. 2020 Your brain interprets particularly suspenseful information through the medulla oblongata, which produces adrenaline. Hannah Malach, Good Housekeeping, 22 Sep. 2020 That receptor then sends a signal through the cranial nerves to the medulla oblongata, which is part of your brainstem, and through to your primary gustatory complex, which interprets individual signals as flavors. Popular Science, 21 Jan. 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'medulla oblongata.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

New Latin, literally, oblong medulla

First Known Use

1668, in the meaning defined above

Time Traveler
The first known use of medulla oblongata was in 1668

Dictionary Entries Near medulla oblongata

Cite this Entry

“Medulla oblongata.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/medulla%20oblongata. Accessed 3 Mar. 2024.

Kids Definition

medulla oblongata

noun
medulla ob·​lon·​ga·​ta -ˌäb-ˌlȯŋ-ˈgät-ə How to pronounce medulla oblongata (audio)
: the somewhat pyramid-shaped bottom part of the vertebrate brain that joins the spinal cord and is concerned with the control of involuntary activities (as breathing and beating of the heart) necessary for life

Medical Definition

medulla oblongata

noun
medulla ob·​lon·​ga·​ta -ˌäb-ˌlȯŋ-ˈgät-ə How to pronounce medulla oblongata (audio)
plural medulla oblongatas or medullae oblongatae -ˈgät-ē How to pronounce medulla oblongata (audio) -ˈgä-ˌtī How to pronounce medulla oblongata (audio)
: 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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