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brain·stemor brain stem (brān′stĕm′)
The portion of the brain, consisting of the medulla oblongata, pons Varolii, and midbrain, that connects the spinal cord to the forebrain and cerebrum.
(Anatomy) the stalklike part of the brain consisting of the medulla oblongata, the midbrain, and the pons Varolii
or brain′ stem`,
the portion of the brain that is continuous with the spinal cord and in mammals comprises the medulla oblongata and parts of the midbrain.
The part of the vertebrate brain located at the base of the brain and important in the control of many voluntary and involuntary body functions. In humans and other mammals, the brainstem is composed of the pons, medulla, and midbrain.
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|Noun||1.||brainstem - the part of the brain continuous with the spinal cord and comprising the medulla oblongata and pons and midbrain and parts of the hypothalamus|
neural structure - a structure that is part of the nervous system
brain, encephalon - that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord
medulla oblongata, medulla, bulb - lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata); "the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning"
pons Varolii, pons - a band of nerve fibers linking the medulla oblongata and the cerebellum with the midbrain