The posterior section of the developing metencephalon recognized transiently within the vertebrate embryo; the rhombic lip extends posteriorly from the roof of the fourth ventricle to dorsal neuroepithelial cell and can be divided into eight structural units based on rhombomeres 1-8 (r1-r8), recognized at early stages of hindbrain development; producing granule cells and five brainstem nuclei, the rhombic lip plays an important role in developing a complex cerebellar neural system.
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related_synonym:
cerebellar anlage; cerebellar primordium; cerebellum primordium; dorsal part of alar plate of metencephalon; future cerebellum; presumptive cerebellum; rostral rhombic lip