Brain–stem



the portion of the brain that is continuous with the spinal cord and comprises the medulla oblongata, pons, midbrain, and parts of the hypothalamus, functioning in the control of reflexes and such essential internal mechanisms as respiration and heartbeat.
Historical Examples

Physiology Ernest G. Martin
Physiology Ernest G. Martin
Physiology Ernest G. Martin
Physiology Ernest G. Martin
A Book of Exposition Homer Heath Nugent
Physiology Ernest G. Martin
A Book of Exposition Homer Heath Nugent
Physiology Ernest G. Martin
Physiology Ernest G. Martin
Physiology Ernest G. Martin

noun
the stalklike part of the brain consisting of the medulla oblongata, the midbrain, and the pons Varolii
brainstem
(brān’stěm’)
The part of the vertebrate brain located at the base of the brain and made up of the medulla oblongata, pons, and midbrain. The brainstem controls and regulates vital body functions, including respiration, heart rate, and blood pressure. See also reticular formation.

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