brainstem (brān´stem″) the stemlike portion of the brain connecting the cerebral hemispheres with the spinal cord, and comprising the pons, medulla oblongata, and midbrain; considered by some to include the diencephalon.
Brainstem
brainstem
brainstem,
brainstem or brain stem (br n st m )n. The portion of the brain, consisting of the medulla oblongata, pons Varolii, and mesencephalon, that connects the spinal cord to the forebrain and cerebrum. |
Brainstem
Brain structure closest to the spinal cord, involved in controlling vital functions, movement, sensation, and nerves supplying the head and neck.
Mentioned in: Progressive Supranuclear Palsy
brainstem
Etymology: AS, bragen + stemm
the portion of the brain comprising the medulla oblongata, the pons, and the mesencephalon. It performs motor, sensory, and reflex functions and contains the corticospinal and reticulospinal tracts. The 12 pairs of cranial nerves from the brain arise mostly from the brainstem. Compare medulla oblongata, mesencephalon, pons.
brainstem,
n the portion of the brain comprising the medulla oblongata, pons, and mesencephalon. It performs motor, sensory, and reflex functions.
brainstem
the stemlike portion of the brain connecting the cerebral hemispheres with the spinal cord, and comprising the pons, medulla oblongata and midbrain; considered by some to include the diencephalon. See also reticular activating system, ascending reticular formation, thalamus.
brainstem auditory evoked response
see brainstem auditory evoked response.
brainstem hemorrhage
results from cranial trauma and characteristically causes unconsciousness with varying types and degrees of motor paralysis and irregularities of respiration, depending on the site.
brainstem reticular formation
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