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1. The posterior portion of the embryonic hindbrain, from which the medulla oblongata develops.
2. The medulla oblongata of the adult brain.

my′e·len·ce·phal′ic (-sə-făl′ĭk) adj.


n, pl -lons or -la (-lə)
(Biology) the part of the embryonic hindbrain that develops into the medulla oblongata. Nontechnical name: afterbrain
myelencephalic adj


(ˌmaɪ ə lɛnˈsɛf əˌlɒn)

n., pl. -lons, -la (-lə).
the posterior section of the hindbrain, which develops into the medulla oblongata.
my`el•en`ce•phal′ic (-səˈfæl ɪk) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.myelencephalon - the posterior part of the hindbrain in developing vertebrates; forms the medulla oblongata in adults
neural structure - a structure that is part of the nervous system
hindbrain, rhombencephalon - the posterior portion of the brain including cerebellum and brainstem
References in periodicals archive ?
Then, 21 tissues (telencephalon, hypothalamus, mesencephalon, cerebellum, myelencephalon, liver, spleen, heart, eye, skin, foregut, gill, white muscle, hindgut, midgut, red muscle, trunk kidney and gonad) were removed immediately and stored in liquid nitrogen.
It incorporates input from two hemispheres, four lobes in each hemisphere (frontal, temporal, parietal, and occipital), and all five layers of the brain (from the uppermost telencephalon and adjacent diencephalon below it to the middle layers of the mesencephalon to the lower levels of the metencephalon and myelencephalon).
As for HTR3D and HTR3E genes, they have low levels in the amygdala and midbrain, brain stem and myelencephalon. The expression of HTR4 is pronounced in the basal ganglia.