| rhombencephalon | That part of the brainstem constituting the medulla oblongata (myelencephalon) and pons (metencephalon). (12 Dec 1998) |
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| ventricle of rhombencephalon | A cavity of irregular tentlike shape extending from the obex rostralward to its communication with the sylvian aqueduct, enclosed between the cerebellum dorsally and the rhombencephalic tegmentum ventrally, having a rhomboid-shaped floor (rhomboid fossa) and a tentlike roof which in its caudal part is formed by the tela choroidea and the posterior medullary velum, in its middle part by the white matter of the cerebellum, and in its narrowing rostral part (recessus superior) by the anterior medullary velum. The fourth ventricle reaches its greatest width at the pontomedullary transition, where it expands laterally behind the cerebellar peduncles into the spoutlike lateral recess, and its greatest height at the fastigial recess, which reaches up into the cerebellar white matter. Direct communication of the brain's ventricle system and the subarachnoid space is established at the level of the fourth ventricle by a median opening in the tela choroidea, the medial aperture of Magendie's foramen, which opens into the cerebellomedullary cistern, and on both sides by the lateral aperture or foramen of Luschka, which connects the lateral recess with the interpeduncular cistern. Synonym: ventriculus quartus, ventricle of rhombencephalon. (05 Mar 2000) |
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| tegmentum of rhombencephalon | The portion of the pons continuous with the mesencephalic tegmentum; it consists of reticular formation, tracts, and cranial nerve nuclei, and forms the dorsal part of the pons (pars dorsalis pontis). Synonym: tegmentum rhombencephali, tegmentum of rhombencephalon. (05 Mar 2000) |
Synonyms : Hind Brain, Brain, Hind, Brains, Hind, Hind Brains, Hindbrains, Rhombencephalons
| rhombencephalon |
hindbrain: the posterior portion of the brain including cerebellum and brainstem
Ãâó: wordnet.princeton.edu/perl/webwn
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| rhombencephalon |
The most caudal of the primary vesicles that are present in the early neural tube, which later gives rise to two secondary vesicles: metencephalon (prospective pons and cerebellum) and myelencephalon (prospective medulla oblongata).
Ãâó: www.nature.com/nrn/journal/v2/n2/glossary/nrn0201_...
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| rhombencephalon |
(Gr. rhombos + enkephalos, brain): The hindbrain; most caudal of the three primary vesicles of the embryonic brain. The adult derivatives of which are the cerebellum and pons (metencephalon) and the medulla oblongata (myelencephal on).
Ãâó: www.umanitoba.ca/faculties/medicine/anatomy/neuro/...
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| rhombencephalon |
The part of the brain developed from the posterior vesicle. It includes the metencephalon and the myeloncephalon, the cerebellum, pons and medulla.
Ãâó: www.meridianinstitute.com/eamt/files/burns2/bur2gl...
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| rhombencephalon | the posterior portion of the brain including cerebellum and pons and medulla oblongata |
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