Prosencephalon
From Wikipedia, the free encyclopedia
| Brain: Prosencephalon | ||
|---|---|---|
| Diagram depicting the main subdivisions of the embryonic vertebrate brain. These regions will later differentiate into forebrain, midbrain and hindbrain structures. | ||
In the anatomy of the brain of vertebrates, the prosencephalon (or forebrain) is the rostral-most portion of the brain. The prosencephalon, the mesencephalon (midbrain), and rhombencephalon (hindbrain) are the three primary portions of the brain during early 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.
[edit] Additional images
Gray40.png
Embryo between eighteen and twenty-one days. |
Gray460.png
Head of chick embryo of about thirty-eight hours’ incubation, viewed from the ventral surface. X 26 |
[edit] See also
fr:Prosencéphale ko:전뇌 nl:Prosencephalon no:Prosencephalon simple:Prosencephalon th:สมองส่วนหน้า
