![](/drem/stage21/labels2/S57L.gif)
![alar plate of metencephalon (cerebellum), artifact fracture(s), artifact space(s), basal plate, cerebral peduncle, edge of diverticulum of rhombencoel (fourth ventricle), interpeduncular fossa, osteogenic layer, rhombencoel (fourth ventricle), roof plate, subarachnoid space, sulcus limitans, surface ectoderm, trochlear nerve (CN IV), vascular plexus](/drem/stage21/Z0/S57N.jpg)
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Carnegie Embryo #4090 | Location: 3-21
Keywords: alar plate of metencephalon (cerebellum), artifact fracture(s), artifact space(s), basal plate, cerebral peduncle, edge of diverticulum of rhombencoel (fourth ventricle), interpeduncular fossa, osteogenic layer, rhombencoel (fourth ventricle), roof plate, subarachnoid space, sulcus limitans, surface ectoderm, trochlear nerve (CN IV), vascular plexus
Source: The Virtual Human Embryo.