Prosencephalon
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robot Adding: [[uk:Передній мозок]]
{{Infobox Brain|
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In the [[anatomy]] of the [[brain]] of [[vertebrates]], the '''prosencephalon''' (or '''forebrain''') is the [[rostral]]-most (forward-most) portion of the [[brain]]. The prosencephalon, the [[mesencephalon]] (midbrain), and [[rhombencephalon]] (hindbrain) are the three primary portions of the brain during early [[developmental biology|development]] of the [[central nervous system]].
At the five-vesicle stage, the prosencephalon separates into the [[diencephalon]] (prethalamus, [[thalamus]], [[hypothalamus]], [[subthalamus]], [[epithalamus]], and [[pretectum]]) and the [[telencephalon]] ([[cerebrum]]). The cerebrum consists of the [[cerebral cortex]], underlying [[white matter]], and the [[basal ganglia]].
When the embryonic prosencephalon fails to divide the brain into two lobes, it results in a condition known as [[holoprosencephaly]].
==Additional images==
<gallery>
Image:Gray40.png|Embryo between eighteen and twenty-one days.
Image:Gray460.png|Head of chick embryo of about thirty-eight hours’ incubation, viewed from the ventral surface. X 26
</gallery>
==See also==
* [[List of regions in the human brain]]
{{neuroanatomy-stub}}
{{Prosencephalon}}
[[Category:Cerebrum]]
[[Category:Developmental biology]]
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