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Atlas of Human Embryos Chapter   Figure
 <   >  search results: junction of mesencephalon and metencephalon Search   Fig. 7-6-2 Fig. 7-7-3 Fig. 7-7-4

alar plate (tectum), alar plate(s), basal plate, ependymal layer, extraventricular portion, isthmus, junction of mesencephalon and metencephalon, mantle layer, marginal layer, mesencephalon (midbrain), mesocoele (midbrain ventricle), metencephalon, rhombencoel (fourth ventricle), rhombic lip (cerebellum): intraventricular portion, roof of rhombencoel (fourth ventricle), sulcus limitans, trochlear nerve (CN IV)

A section through the middle of the mes- and metencephalon junction.

Observe:
1. The communication of the mesocoele with the fourth ventricle through the isthmus.
2. The sulcus limitans separating the basal and alar plates.
3. The three layers of the brain wall.
4. The lateral part of the alar plate of the metencephalon called the rhombic lip, which gives rise to the cerebellum.
5. The intra- and extraventricular portions of the rhombic lip.


Keywords: alar plate (tectum), alar plate(s), basal plate, ependymal layer, extraventricular portion, isthmus, junction of mesencephalon and metencephalon, mantle layer, marginal layer, mesencephalon (midbrain), mesocoele (midbrain ventricle), metencephalon, rhombencoel (fourth ventricle), rhombic lip (cerebellum): intraventricular portion, roof of rhombencoel (fourth ventricle), sulcus limitans, trochlear nerve (CN IV)

Source: Atlas of Human Embryos.